Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add conversion to properly parse query parameter propagationPolicy

**What this PR does / why we need it**:
This delete request query parameter has been broken for a year. I'm not sure if we want to deprecate the non-standard DeleteOptions body on delete request eventually. 

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #43329

**Special notes for your reviewer**:

**Release note**:

```release-note
API server properly parses propagationPolicy as a query parameter sent with a delete request
```

/sig api-machinery

Automatic merge from submit-queue (batch tested with PRs 64204, 64302). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

simplify logic and remove else blocks

```release-note
NONE
```

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

apiextensions: unify mono- and multi-versioned test helpers

The mono-versioned helpers are a special case of the multi-versioned ones.

Fixes part of https://github.com/kubernetes/kubernetes/issues/64136.

Automatic merge from submit-queue (batch tested with PRs 64175, 63893). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Expose openapi schema to handlers

**What this PR does / why we need it**:
Build an openapi spec for each api resource handler. This spec will be able to be consumed by server-side apply and server-side openapi validation.
The reason for putting it into master is so we can work on implementing server side validation against the openapi spec as well as server side apply, and it will make merging the server side apply feature branch a smaller, less risky PR

/sig api-machinery
/kind feature
cc @liggitt @lavalamp @seans3 @mbohlool @apelisse 

**Release note**:
```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 64175, 63893). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

add colon separators to improve readability of test names

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 61963, 64279, 64130, 64125, 64049). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix TestSchedulerWithVolumeBinding to avoid setting predicate ordering.

It is causing data race condition as predicate ordering is changing global
variable `predicatesOrdering`. Infact this test does not require any special
predicate order and should work on default predicate ordering as far as
VolumeScheduling feature is enabled.

See these logs:

```
==================
==================
WARNING: DATA RACE
Read at 0x00c420894180 by goroutine 156:
  k8s.io/kubernetes/pkg/scheduler/core.podFitsOnNode()
      /home/avagarwa/upstream-code/gocode/src/k8s.io/kubernetes/pkg/scheduler/core/generic_scheduler.go:503 +0xbb
  k8s.io/kubernetes/pkg/scheduler/core.(*genericScheduler).findNodesThatFit.func1()
      /home/avagarwa/upstream-code/gocode/src/k8s.io/kubernetes/pkg/scheduler/core/generic_scheduler.go:353 +0x2f0
  k8s.io/kubernetes/vendor/k8s.io/client-go/util/workqueue.Parallelize.func1()
      /home/avagarwa/upstream-code/gocode/src/k8s.io/kubernetes/vendor/k8s.io/client-go/util/workqueue/parallelizer.go:47 +0xa3

Previous write at 0x00c420894180 by goroutine 186:
  k8s.io/kubernetes/pkg/scheduler.TestSchedulerWithVolumeBinding()
      /home/avagarwa/upstream-code/gocode/src/k8s.io/kubernetes/pkg/scheduler/scheduler_test.go:663 +0x71
  testing.tRunner()
      /usr/lib/golang/src/testing/testing.go:777 +0x16d

Goroutine 156 (running) created at:
  k8s.io/kubernetes/vendor/k8s.io/client-go/util/workqueue.Parallelize()
      /home/avagarwa/upstream-code/gocode/src/k8s.io/kubernetes/vendor/k8s.io/client-go/util/workqueue/parallelizer.go:43 +0x139
  k8s.io/kubernetes/pkg/scheduler/core.(*genericScheduler).findNodesThatFit()
      /home/avagarwa/upstream-code/gocode/src/k8s.io/kubernetes/pkg/scheduler/core/generic_scheduler.go:378 +0xe8a
  k8s.io/kubernetes/pkg/scheduler/core.(*genericScheduler).Schedule()
      /home/avagarwa/upstream-code/gocode/src/k8s.io/kubernetes/pkg/scheduler/core/generic_scheduler.go:131 +0x385
  k8s.io/kubernetes/pkg/scheduler.(*Scheduler).schedule()
      /home/avagarwa/upstream-code/gocode/src/k8s.io/kubernetes/pkg/scheduler/scheduler.go:192 +0xcd
  k8s.io/kubernetes/pkg/scheduler.(*Scheduler).scheduleOne()
      /home/avagarwa/upstream-code/gocode/src/k8s.io/kubernetes/pkg/scheduler/scheduler.go:447 +0x598
  k8s.io/kubernetes/pkg/scheduler.(*Scheduler).(k8s.io/kubernetes/pkg/scheduler.scheduleOne)-fm()
      /home/avagarwa/upstream-code/gocode/src/k8s.io/kubernetes/pkg/scheduler/scheduler.go:182 +0x41
  k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/wait.JitterUntil.func1()
      /home/avagarwa/upstream-code/gocode/src/k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:133 +0x61
  k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/wait.JitterUntil()
      /home/avagarwa/upstream-code/gocode/src/k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:134 +0xcd
  k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/wait.Until()
      /home/avagarwa/upstream-code/gocode/src/k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:88 +0x5a

Goroutine 186 (running) created at:
  testing.(*T).Run()
      /usr/lib/golang/src/testing/testing.go:824 +0x564
  testing.runTests.func1()
      /usr/lib/golang/src/testing/testing.go:1063 +0xa4
  testing.tRunner()
      /usr/lib/golang/src/testing/testing.go:777 +0x16d
  testing.runTests()
      /usr/lib/golang/src/testing/testing.go:1061 +0x4e1
  testing.(*M).Run()
      /usr/lib/golang/src/testing/testing.go:978 +0x2cd
  main.main()
      _testmain.go:52 +0x22a
==================
--- FAIL: TestSchedulerWithVolumeBinding (18.04s)
	testing.go:730: race detected during execution of test
FAIL
```

It is pretty easy to reproduce this race by following these steps:

```
cd pkg/scheduler
go test -c -race
stress -p 100 ./scheduler.test
```

Predicate ordering to this unit test was added here: https://github.com/kubernetes/kubernetes/pull/57168
Since the whole scheduler instance uses just one ordering at time, not sure what is the advantage. 

@kubernetes/sig-scheduling-bugs @bsalamat @k82cn @frobware @smarterclayton @sjenning 

```release-note
None
```

Automatic merge from submit-queue (batch tested with PRs 61963, 64279, 64130, 64125, 64049). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add node-exclusive tags to tests in test/e2e_node

Original issue: #59001
Depends on: #64128

Add node-exclusive tags based on the [proposal](https://docs.google.com/document/d/1BdNVUGtYO6NDx10x_fueRh_DLT-SVdlPC_SsXjYCHOE/edit#)

Follow-up PRs will:
 - Tag the tests in `test/e2e/common`
 - Change the test job configurations to use the new tests
 - Remove the unused, non-node-exclusive tags in `test/e2e_node`

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 61963, 64279, 64130, 64125, 64049). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add Node-exclusive tags to tests in test/e2e/common

Original issue: #59001

Add node-exclusive tags based on the [proposal](https://docs.google.com/document/d/1BdNVUGtYO6NDx10x_fueRh_DLT-SVdlPC_SsXjYCHOE/edit#)

Previous PR: #64125
Depends on: #64128

Follow-up PRs will:
 - Change the test job configurations to use the new tests
 - Remove the unused, non-node-exclusive tags in `test/e2e_node`

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 61963, 64279, 64130, 64125, 64049). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Use default seccomp profile for DNS addons.

**What this PR does / why we need it**:
This PR sets the default seccomp profile of DNS addons to 'docker/default'. This PR is a followup of #62662. We are using 'docker/default' instead of 'runtime/default' in addons in order to handle node version skew. When seccomp profile is applied automatically by default later, we can remove those annotations.

This is PR is part of #39845.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 61963, 64279, 64130, 64125, 64049). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Make serverAddressByClientCIDRs in discovery API optional

**What this PR does / why we need it**:
See https://github.com/kubernetes/kubernetes/issues/61868

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #61868

**Special notes for your reviewer**:
WIP: I'm having trouble updating swagger-spec using our update scripts. Thinking about removing swagger-spec from our code base as it has long passed deprecation. Sending this PR now to see the test results. 

**Release note**:

```release-note
Property `serverAddressByClientCIDRs` in `metav1.APIGroup` (discovery API) now become optional instead of required
```

/sig api-machinery

Automatic merge from submit-queue (batch tested with PRs 63417, 64249, 64242, 64128, 64275). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

graduate DynamicKubeletConfig feature to beta

Everything in the https://github.com/kubernetes/features/issues/281 beta target except a few documentation-related items is complete. Docs should be done very soon, so I'm sending this PR to graduate to beta before freeze.

```release-note
The dynamic Kubelet config feature is now beta, and the DynamicKubeletConfig feature gate is on by default. In order to use dynamic Kubelet config, ensure that the Kubelet's --dynamic-config-dir option is set. 
```

/cc @luxas

Automatic merge from submit-queue (batch tested with PRs 63417, 64249, 64242, 64128, 64275). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

 conformance testdata: remove tags and trim spaces

**What this PR does / why we need it**:
To detect whether conformance tests have been changed, the test
argument with the `ConformanceIt` is recorded to conformance.txt.
This change remove additional tags (e.g., [Feature:]) and trim spaces,
so that the detection is less-prone to noise.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 63417, 64249, 64242, 64128, 64275). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

fix bugs that break processing when printing errors occur in kubectl

**What this PR does / why we need it**:
The process should continue when error happens, this patch fix the problem
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 63417, 64249, 64242, 64128, 64275). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

resourcequota return StatusError when timeout

Fixes #64244

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

FlagMaps may be nil (prior to being initialized)

Do not panic if they haven't been set yet.

Fixes: #64090

Automatic merge from submit-queue (batch tested with PRs 63319, 64248, 64250, 63890, 64233). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

move Describer from factory

**Release note**:
```release-note
NONE
```

Moves `Describer` out of the object_mapping_factory

cc @soltysh @deads2k

Automatic merge from submit-queue (batch tested with PRs 63319, 64248, 64250, 63890, 64233). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Additional test coverage for kubectl/cmd/cp

This commit adds some additional test coverage
for the kubectl cp command.

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 63319, 64248, 64250, 63890, 64233). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

replace `__internal` with runtime.APIVersionInternal

**What this PR does / why we need it**:

Replace `__internal` with runtime.APIVersionInternal

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 63319, 64248, 64250, 63890, 64233). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add reason message logs for non-exist Azure resources

**What this PR does / why we need it**:

In azure_wrap.go the function checkResourceExistsFromError() looks at a received error and determines it to be a ResourceNotFound if the HTTP status is http.StatusNotFound. However, the HTTP status also equals http.StatusNotFound in case of SubscriptionNotFound.

this PR adds logs to indict the real error messages for such case.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #64220 

**Special notes for your reviewer**:

**Release note**:

```release-note
Add reason message logs for non-exist Azure resources
```

Automatic merge from submit-queue (batch tested with PRs 63319, 64248, 64250, 63890, 64233). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Always masquerade node-originating traffic with a service VIP source ip

**What this PR does / why we need it**:
This is a follow up to make IPVS work on systems without cluster-cidr or masquerade-all.
On these systems the best matching network / source IP to reach the service VIP is the service VIP itself - at least for the host network.
The workaround is simple: Everything originating on the host (OUTPUT nat chain) with a source IP that is the VIP should be masqueraded.

The relevant rule change is the first rule in `KUBE-SERVICES`:
```
Chain KUBE-SERVICES (2 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 KUBE-MARK-MASQ  all  --  *      *       0.0.0.0/0            0.0.0.0/0            match-set KUBE-CLUSTER-IP src,dst
  104  6240 KUBE-MARK-MASQ  tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp match-set KUBE-NODE-PORT-TCP dst
```

The matching rule could be stricter by matching src(ip),dst(ip),dst(port) but the src ip will only be selected if the VIP should be reached.

**Which issue(s) this PR fixes**
Fixes #63241

**Special notes for your reviewer**:

**Release note**:
```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 64060, 63904, 64218, 64208, 64247). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

apimachinery: remove unused UnstructuredObjectConverter

This is not in apiextensions-apiserver for CR conversion.

Automatic merge from submit-queue (batch tested with PRs 64060, 63904, 64218, 64208, 64247). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

apiextensions: extract orthortogonal behaviour from nopConve

This is preparation for adding more CR converters. Not every new converter should implement the generic conversion behaviour of CRs.

Fixes parts of https://github.com/kubernetes/kubernetes/issues/64136.

Automatic merge from submit-queue (batch tested with PRs 64060, 63904, 64218, 64208, 64247). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

prevent zero for leader election timeouts

Add conditional checks for a stupid error that took me 20 minutes to find.

I don't see a reason to allow zero for any of the leader election tuning params

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 64060, 63904, 64218, 64208, 64247). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Revert enable PodPreset admission and also enable settings.k8s.io/v1a…

…lpha1 api resource



**What this PR does / why we need it**:

Enable PodPreset admission for there are alpha feature test cases covering it.  Simultaneously enable sttings.k8s.io/v1alpha1 api resource.

Fixes #63843 

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 64060, 63904, 64218, 64208, 64247). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Remove knob of equiv class in perf test

**What this PR does / why we need it**:

The ecache knob is controlled by feature gate now:
```go

// createSchedulerConfigurator create a configurator for scheduler with given informer factory and default name.
func createSchedulerConfigurator(
	clientSet clientset.Interface,
	informerFactory informers.SharedInformerFactory,
) scheduler.Configurator {
	// Enable EnableEquivalenceClassCache for all integration tests.
	utilfeature.DefaultFeatureGate.Set("EnableEquivalenceClassCache=true")
```
We don't need to pass a flag (and it is not used).

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 63434, 64172, 63975, 64180, 63755). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Dump Stack when docker fails on healthcheck

Save stack dump of docker daemon in order to be able to
investigate why docker daemon was unresposive to `docker ps`

See https://github.com/moby/moby/blob/master/daemon/daemon.go on
how docker sets up a trap for SIGUSR1 with `setupDumpStackTrap()`

**What this PR does / why we need it**:

This allows us to investigate why docker daemon was unresponsive to "docker ps" command. 

**Special notes for your reviewer**:
Manually tested on Ubuntu and COS.

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 63434, 64172, 63975, 64180, 63755). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Check SessionAffinity for Azure load balancer

**What this PR does / why we need it**:

Currently azure load balance rule comparing is based on name which does not have affinity information. So during updating, the loadDistribution property is not updated.

This PR fixes this and adds some verbose logs for better understanding what's happening.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #63908

**Special notes for your reviewer**:

Cherry pick to 1.10.

**Release note**:

```release-note
Fix SessionAffinity not updated issue for Azure load balancer
```

Automatic merge from submit-queue (batch tested with PRs 63434, 64172, 63975, 64180, 63755). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Optimize the lock which in the RunPredicate

**What this PR does / why we need it**:


Enhance the performance of scheduler

-  Change the lock in the RunPredicate from lock to rlock




**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:

Could solve part of #63784 

**Special notes for your reviewer**:

_Run benchmark test by scheduler_perf_:
`Before`  BenchmarkScheduling/1000Nodes/0Pods-32     1000    11689758 ns/op
`After`     BenchmarkScheduling/1000Nodes/0Pods-32     1000    5951510 ns/op

_Run integration (density) test by scheduler_perf_:
Schedule 3000 Pods On 3000 Nodes
`Before`  rate  19 per second on average
`After`     rate  58 per second on average

_Cpu profile test result_:
`Before`  [click](https://cdn.rawgit.com/godliness/files/master/63784_before.svg)
`After`     [click](https://cdn.rawgit.com/godliness/files/master/63784_after.svg)

**Release note**:

```release-note
`None`
```

/sig scheduling

/cc @misterikkit 
/cc @bsalamat
/cc @ravisantoshgudimetla 
/cc @resouer

Automatic merge from submit-queue (batch tested with PRs 63434, 64172, 63975, 64180, 63755). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

re-reorder authorizers (RBAC before Webhook).

Sort of reverts #57426

We aren't relying on the ordering for anything, and it's not worth the additional latency/traffic at this point.

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix typo in volume_stats.go

**What this PR does / why we need it**:
While reviewing the implementation details I came across a typo in volume_stats.go
sed/volumeStatsCollecotr/volumeStatsCollector/

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 64127, 63895, 64066, 64215, 64202). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

apiextensions: reduce verbose logs in removeDeadStorage

We don't need one log line per version.

Fixes https://github.com/kubernetes/kubernetes/pull/63830/files#r189808872, part of #64136.

Automatic merge from submit-queue (batch tested with PRs 64127, 63895, 64066, 64215, 64202). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix documentation of GA is in APIService's PriorityVersion and CRD's Versions

Explain what GA is in APIService's PriorityVersion and CRD's Versions.

ref #64136 

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 64127, 63895, 64066, 64215, 64202). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

kubeadm: Refactor the .Etcd substruct in the v1alpha2 API

**What this PR does / why we need it**:
Splits the monolithic `.Etcd` struct with all the options as fields to a more modular and clear design with two sub-structs for the different modes of hosting etcd we support.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Part of kubernetes/community#2131

**Special notes for your reviewer**:
Depends on:
 - [x] https://github.com/kubernetes/kubernetes/pull/63917

Follows up: https://github.com/kubernetes/kubernetes/pull/63871
TODO: I still need to write unit tests for this.

**Release note**:

```release-note
[action required] kubeadm: The `:Etcd` struct has been refactored in the v1alpha2 API. All the options now reside under either `.Etcd.Local` or `.Etcd.External`. Automatic conversions from the v1alpha1 API are supported.
```
@kubernetes/sig-cluster-lifecycle-pr-reviews @liztio

Automatic merge from submit-queue (batch tested with PRs 64127, 63895, 64066, 64215, 64202). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add warnings about cache invalidation.

Part of https://github.com/kubernetes/kubernetes/pull/63040 is the
assumption that scheduler cache updates must happen before equivalence
cache updates for any given informer event.

The reason for this is that the equivalence cache implementation checks
the main cache for staleness while holding the equiv. cache write lock.

case 1: If an informer invalidates an equiv. cache entry before the
staleness check, then we know that the main cache update completed.

case 2: If an informer blocks trying to grab the equiv. cache lock, then
invalidation will occur right after the potentially stale update is
written.

This patch adds a note to places where we invalidate the equivalence
cache so that hopefully nobody violates this invariant.



**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
/kind cleanup
/sig scheduling

Automatic merge from submit-queue (batch tested with PRs 64127, 63895, 64066, 64215, 64202). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

convert Duration into seconds by go library function

**What this PR does / why we need it**:
Here we try convert time.Duration  into int64 seconds. I think it's better to use golang library function,
https://golang.org/pkg/time/#Duration.Round

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```