to pick up changes about API linter framework and namesMatch API rule

Automatic merge from submit-queue (batch tested with PRs 65299, 65524, 65154, 65329, 65536). 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 various fixes to flex tests and fix some crashes

* Fixes two controller-manager crashes when a flex plugin gets removed from flex directory.
* Also enables e2e tests to run in local clusters and other environments.
* Removes disruptive from flex e2e tests because flex can be installed in a running cluster and does not require kubelet or controller-manager restart anymore.

/sig storage

cc @verult @jsafrane 

```release-note
Fix controller-manager crashes when flex plugin is removed from flex plugin directory
```

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make builder tolerant of restmapper failures when it doesn't need answer

@kubernetes/sig-cli-maintainers 

The restmapper, category expander, and client are not required for local lookups.  Make them late binding functions instead of building and gathering errors early.

/assign @soltysh @juanvallejo 

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 65299, 65524, 65154, 65329, 65536). 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>.

Allow override of AllowCreateOnUpdate with new argument to Update

**What this PR does / why we need it**:
Changes the Update function signature to include a new bool which tells storage to override what the UpdateStrategy returns for AllowCreateOnUpdate. This is not exposed to the user, the handler is the one that sets this override value. Eventually the patch handler will set this to true, in order to provide more consistent apply behavior, without changing the existing PUT behavior.

Redo of https://github.com/kubernetes/kubernetes/pull/65075 but on master to reduce number of conflicts when we merge feature-serverside-apply with master.

/sig api-machinery
/cc @apelisse @lavalamp 

**Release note**:
```release-note
NONE
```
No release note because this is just an internal change

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Unify log messages in pkg/kubectl/cmd/util/helpers.go

**What this PR does / why we need it**:
Unify a flag fatal message from "err accessing ..." to "**error** accessing ...", follow the word of other messages in _pkg/kubectl/cmd/util/helpers.go_. 

**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**:
Very glad to open my first PR for kubernetes, thanks.

**Release note**:

```release-note
NONE
```

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fix a log param error

**What this PR does / why we need it**:
As the patch shows, it fix a small log param error in pkg/kubectl/cmd/get/get.go
**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
```

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Add missing error handling in schema-related code

**What this PR does / why we need it**:
Adds missing error handling to a few places.

**Which issue(s) this PR fixes**
Updates #51457. Still more work to do to fix the issue - client generation code needs to be updated (addressed in https://github.com/kubernetes/kubernetes/pull/64664).

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

/kind bug
/sig api-machinery

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remove unused variable in openapi-spec script

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

**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
```

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Fixes docs mismatched with implementation

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

Some document is far different with the implementation, which is really confusing.

Manually fixed them and appended more information.

**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
```

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enable etcdv3 client prometheus metics

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

Provide a way to enable etcdv3 client prometheus metics

**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 #64740

**Special notes for your reviewer**:

**Release note**:

```release-note
Enable etcdv3 client prometheus metics
```

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simplify httplog.LogOf

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

LogOf returns the logger hiding in w， otherwise returns a passthroughLogger, and it never panics.

**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>.

Limit usage of system critical priority classes to the system namespace

**What this PR does / why we need it**:
Changes Priority admission controller to limit usage of system critical priority classes to the system namespace. This change is needed to mitigate the risk of creating many pods at system critical priority levels that could cause preemption of system critical components.

**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 #

ref/ #65557

**Special notes for your reviewer**:

**Release note**:

```release-note
Limit the usage of system-node-critical and system-cluster-critical priority classes to kube-system namespace.
```

/sig scheduling

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fix missing protocol match in ipvs mode

**What this PR does / why we need it**:
fix missing protocol match in ipvs mode. See issue #65574
**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 #65574

**Special notes for your reviewer**:
Tested cases:
- ClusterIP distributed to pod on same node
- ClusterIP distributed to pod on other node
- NodePort distributed to pod on same node
- NodePort distributed to pod on other node

**Release note**:

```release-note

```

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skip nic that are in failing state

**What this PR does / why we need it**: this fixes partially #65025. Currently when getting primary NIC for VMSS the provisioning state isn't returned.

**Which issue(s) this PR fixes** : Fixes partially (for VMAS) #65025

**Special notes for your reviewer**:

/assign @feiskyer 

**Release note**:

```release-note
skip nodes that have a primary NIC in a 'Failed' provisioningState
```

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scheduler: update tests to use sub-benchmarks (pkg/scheduler/cache)

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

Go 1.7 added the subtest feature which can make table-driven tests much easier to run and debug. Some tests are not using this feature.

Further reading: [Using Subtests and Sub-benchmarks](https://blog.golang.org/subtests)

/kind cleanup

**Release note**:

```release-note
NONE
```

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kubeadm: remove redundant flags settings for kubelet

**What this PR does / why we need it**:
#63580 fixes flag bindings for `--cni-conf-dir` and `cni-bin-dir`. No need to explicitly specify default value when building kubelet args in kubeadm.

Depends on #63580

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

**Special notes for your reviewer**:
/kind cleanup
/area kubeadm
/sig cluster-lifecycle
/cc timothysc luxas 

**Release note**:

```release-note
kubeadm: remove redundant flags settings for kubelet
```

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stop using deprecated --etcd-quorum-read

etcd-quorum-read was deprecated, but it is still used. 
This pr stops using it.

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 65349, 65354, 65402). 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>.

Get rid of depends on kubectl in kubeadm

**What this PR does / why we need it**:
Get rif of depends on kubectl in kubeadm
**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 65349, 65354, 65402). 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>.

fixtodo: Move these kubelet start/stop functions to phases/kubelet

**What this PR does / why we need it**:
fixtodo: Move these kubelet start/stop functions to phases/kubelet
**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 65349, 65354, 65402). 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 error when failed to prepull the images

**Special notes for your reviewer**:
return error when failed to prepull the images
**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 64758, 65627). 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>.

Fixed the wrong elasticsearch node counter

**What this PR does / why we need it**:
I am experiencing the nasty bug during the deployment of the elasticsearch-logging statefulset on my custom Kubernetes in Azure (AzureDisk persistant storage). Let's imaging that we want two master nodes which our elasticsearch will try to find during the discovery procedure. Because of the delay between creation of two nodes (azure disk creation) there will be a situation when only one node exists in the service endpoint list and it will be enough to pass the elasticsearch logging discovery step. Only one node will be written to the elasticsearch.yml, but it expects two. Elasticsearch will not be able to find required two nodes. Then Kubernetes will terminate the first pod while the second pod is almost ready (remove that endpoint from service). Then it adds the ip of the second pod to the endpoint and discovery fails as well. This is the endless procedure.

**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
Fixes the wrong elasticsearch node counter

```

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Setup TLS with CA Cert for vsphere cloud provider

- Extend config to take a path to a CA Certificate
- Use the CA Cert when establishing a connection with the SOAP client

Testing
We provide certs and keys for tests as fixtures, `vclib/fixtures`.
Those were created (and can be regenerated) using `vclib/fixtures/createCerts.sh`.

At the moment it's possible to configure a CA path and at the same time allow insecure
communication between vsphere cloud provider and vcenter. This may
change in the future; we might opt for overwriting the insecure
communication if a CA is configured / log and transparently pass the
arguments to the vcenter command / other. To be discussed.

At the moment the CA is a global level configuration. In other
words, all vcenter servers need to use certificates signed by the same
CA. There might be use cases for different CA per vcenter server; to be
discussed.





**What this PR does / why we need it**:
This PR adds the option of configuring a trusted CA for the communication between the vsphere cloud provider and the vcenter control plane.

**Which issue(s) this PR fixes**:
Fixes #64222

**Special notes for your reviewer**:

**Release note**:

```release-note
- Can configure the vsphere cloud provider with a trusted Root-CA
```

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ipvs: remove duplicated masq rules

Duplicated masq rules are created by current implementation:
```
-A KUBE-NODE-PORT -m comment --comment "mark MASQ for
externaltrafficpolicy=cluster" -j KUBE-MARK-MASQ
-A KUBE-NODE-PORT -j KUBE-MARK-MASQ
```
The last one is always there. So the one inside if statement could
just be removed.



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

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


**Special notes for your reviewer**:

**Release note**:

```release-note

```

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Increase certain waiting time window in gpu_device_plugin e2e_node test.

Kubelet restart process seems to get a bit slower recently. From running
the gpu_device_plugin e2e_node test on GCE, I saw it took ~37 seconds
for kubelet to start CM DeviceManager after it restarts, and then took
~12 seconds for the gpu device plugin to re-register. As the result,
this e2e_node test fails because the current 10 sec waiting time is too
small. Restarting a container also seems to get slower that it sometimes
exceeds the current 2 min waiting time in ensurePodContainerRestart().
This change increase both waiting time to 5 min to leave enough space
on slower machines.



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

**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
```

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Increase glog level of some scheduling errors.

In our production environments, we are noticing that for every scheduling error, we are logging 3 errors at following lines:

1. https://github.com/kubernetes/kubernetes/blob/master/pkg/scheduler/scheduler.go#L194

2. https://github.com/kubernetes/kubernetes/blob/master/pkg/scheduler/factory/factory.go#L1416

3. https://github.com/kubernetes/kubernetes/blob/master/pkg/scheduler/factory/factory.go#L1323

This PR increases log levels of the last 2 errors to V(3).Infof. We can discuss if it would be helpful to increase the log level of the first error too.

@kubernetes/sig-scheduling-pr-reviews 
@bsalamat @k82cn @liggitt @sjenning 

```release-note
None.
```

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Bump gengo to remove _ from generated import aliases

Pickup https://github.com/kubernetes/gengo/pull/113 and https://github.com/kubernetes/gengo/pull/111.

Avoid tons of golint exceptions for https://github.com/kubernetes/kubernetes/pull/64664.

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Add Ubuntu 18.04 (Bionic) series to Juju charms

**What this PR does / why we need it**:
Adds Ubuntu 18.04 (Bionic) series to Juju charms. 16.04 (Xenial) is still the default series, but with this change the charms can be easily deployed on Bionic if desired.

**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
Add Ubuntu 18.04 (Bionic) series to Juju charms
```

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Fix local volume directory can't be deleted issue

**What this PR does / why we need it**:
Need to add volume mode field to constructed pv spec.

**Special notes for your reviewer**:
I  get an issue:
1) kubelet has lots of logs with errors  related with volume mode
```
Jun 21 10:31:18  kubelet[19333]: E0621 10:31:18.422321   19333 reconciler.go:179] operationExecutor.NewVolumeHandler for UnmountVolume failed for volume "lv-e57cf589-4658-4881-b125-7b9f35c2c8eb" (UniqueName: "kubernetes.io/local-volume/4103e613-656c-11e8-8c20-74dbd180ddb4-lv-e57cf589-4658-4881-b125-7b9f35c2c8eb") pod "4103e613-656c-11e8-8c20-74dbd180ddb4" (UID: "4103e613-656c-11e8-8c20-74dbd180ddb4") : cannot get volumeMode for volume: lv-e57cf589-4658-4881-b125-7b9f35c2c8eb
Jun 21 10:31:18  kubelet[19333]: E0621 10:31:18.422351   19333 reconciler.go:179] operationExecutor.NewVolumeHandler for UnmountVolume failed for volume "lv-b1e788ac-78eb-4d26-819a-263cef5337ea" (UniqueName: "kubernetes.io/local-volume/4082c1da-656c-11e8-8c20-74dbd180ddb4-lv-b1e788ac-78eb-4d26-819a-263cef5337ea") pod "4082c1da-656c-11e8-8c20-74dbd180ddb4" (UID: "4082c1da-656c-11e8-8c20-74dbd180ddb4") : cannot get volumeMode for volume: lv-b1e788ac-78eb-4d26-819a-263cef5337ea
```
2) The pod is an orphan pod and have the volume directory left at the node

3) Because of the errors, the volume directory will never be deleted

**Release note**:
```release-note
Fix local volume directory can't be deleted because of volumeMode error
```

Automatic merge from submit-queue (batch tested with PRs 65582, 65480, 65310, 65644, 65645). 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>.

allow enabling kubelet serving certificate rotation via flag

allows the server rotation feature to be exercised via flags as well as config file

```release-note
NONE
```

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Fix test failure of truncated time

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

The test of `TestFsStoreAssignedModified` in `pkg/kubelet/kubeletconfig/checkpoint/store` fails in my environment like below.

```
$ make test WHAT=./pkg/kubelet/kubeletconfig/checkpoint/store/
Running tests for APIVersion: v1,admissionregistration.k8s.io/v1alpha1,admissionregistration.k8s.io/v1beta1,admission.k8s.io/v1beta1,apps/v1beta1,apps/v1beta2,apps/v1,authentication.k8s.io/v1,authentication.k8s.io/v1beta1,authorization.k8s.io/v1,authorization.k8s.io/v1beta1,autoscaling/v1,autoscaling/v2beta1,batch/v1,batch/v1beta1,batch/v2alpha1,certificates.k8s.io/v1beta1,coordination.k8s.io/v1beta1,extensions/v1beta1,events.k8s.io/v1beta1,imagepolicy.k8s.io/v1alpha1,networking.k8s.io/v1,policy/v1beta1,rbac.authorization.k8s.io/v1,rbac.authorization.k8s.io/v1beta1,rbac.authorization.k8s.io/v1alpha1,scheduling.k8s.io/v1alpha1,scheduling.k8s.io/v1beta1,settings.k8s.io/v1alpha1,storage.k8s.io/v1beta1,storage.k8s.io/v1,storage.k8s.io/v1alpha1,
+++ [0628 22:53:39] Running tests without code coverage
--- FAIL: TestFsStoreAssignedModified (0.00s)
        fsstore_test.go:316: expect "2018-06-28T22:53:43+09:00" but got "2018-06-28T22:53:43+09:00"
FAIL
FAIL    k8s.io/kubernetes/pkg/kubelet/kubeletconfig/checkpoint/store    0.236s
make: *** [test] Error 1
```

My environment is
OS: macOS Sierra Version 10.12.6
File System: Journaled HFS+

The error message confused me because the comparing times looked the same in the error log. If we know certain systems truncate times, I think we can just compare less precise times to avoid confusions in tests.

**Special notes for your reviewer**:
N/A

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 65518, 65624, 65380, 65390, 65586). 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>.

Preparing for 1.11 release and update ingress image to 0.16.1

**What this PR does / why we need it**: This is to prepare Juju charms to default to 1.11 release. 

**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 65518, 65624, 65380, 65390, 65586). 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>.

cleanup: remove deadcode

/kind cleanup

remove deadcode
remove unnecessary conversion

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 65518, 65624, 65380, 65390, 65586). 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 kubectl delete hack that handles DaemonSet deletion

**What this PR does / why we need it**: follow up #64847

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


**Special notes for your reviewer**: 
/cc @liggitt @soltysh 

**Release note**:

```release-note
NONE
```