Automatic merge from submit-queue

delete unused variable in etcd_help_test.go

**What this PR does / why we need it**:
delete unused variable validEtcdVersion ,for keep the code clean

**Special notes for your reviewer**: none

**Release note**:  none

Automatic merge from submit-queue

Split out server-only code from api packages shared with the client

Fixes staging/copy.sh.

Automatic merge from submit-queue

Enable kubernetes_metadata by default for ELK stack

Looks like it was accidentally removed and was not restored back in this PR https://github.com/kubernetes/kubernetes/pull/29883
Because actually this plugin still exists in the image, but new ELK deployment don't allow you to index namespaces, pod names, etc.

Automatic merge from submit-queue

add owners to apimachinery

Adds owners to apimachinery/pkg and I need a commit to use as an example for my sync'ing script.

@kubernetes/sig-api-machinery-misc @smarterclayton @lavalamp should be non-contentious I'd think.

Automatic merge from submit-queue

Update amd64 kube-proxy base image to debian-iptables-amd64:v5

**What this PR does / why we need it**: this was supposed to go into #39695, but I screwed up the rebase.

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 39731, 39662, 39721)

container-linux: restart rkt-api on failure

This works around a flake I saw which had the same root cause as
https://github.com/coreos/rkt/issues/3513.

This will potentially help reduce the impact of such future problems as
well.

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 39731, 39662, 39721)

Update dashboard version to v1.5.1

**What this PR does / why we need it**:
Latest Dashboard developments, including a CSRF issue in the dashboard POST handlers

**Release note**:
```
Set Dashboard UI version to v1.5.1
```

Automatic merge from submit-queue

Fix kubelet cross build

**What this PR does / why we need it**: Cross builds are not passing for MacOS and Windows. We are expecting Windows binaries for `kubelet` and `kube-proxy` to be released by the first time with 1.5.2 to be released later today.

**Which issue this PR fixes**:
fixes #39005
fixes #39714

**Special notes for your reviewer**: /cc @feiskyer @smarterclayton @vishh this should be P0 in order to be merged before 1.5.2 and obviously fix the cross build.

Automatic merge from submit-queue

Fix kubectl get -f <file> -o <nondefault printer> so it prints all items in the file

**What this PR does / why we need it**: Fix kubectl get -f <file> -o <nondefault printer> so it prints all the objects in the file, instead of just the first one. Also add a test for this feature.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #38907 

**Special notes for your reviewer**:

**Release note**:

```release-note
```

cc @AdoHe @deads2k @liggitt @fabianofranz @kubernetes/kubectl @kubernetes/sig-cli-misc

Automatic merge from submit-queue (batch tested with PRs 39475, 38666, 39327, 38396, 39613)

Remove unused parameter

@pwittrock  PTAL, thanks

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 39475, 38666, 39327, 38396, 39613)

e2e tests: new portforwardertester with another three tests for case …

PR include:
- add new e2e test cases for BIND_ADDRESS='0.0.0.0'
- add to portforwardertester.go os.Getenv("BIND_ADDRESS") and if not set, it should be localhost for backward compability with existing tests
- for existing tests pass explicity BIND_ADDRESS='localhost'
- rename existing tests

It was mention in the issue: #32128 

cc @mzylowski @pskrzyns

Automatic merge from submit-queue (batch tested with PRs 39475, 38666, 39327, 38396, 39613)

Fix a bug in cascading deletion of federation objects

When FinalizerOrphan is present and set to true in federated object we are currently removing the FinalizerOrphan first and then removing FinalizerDeleteFromUnderlyingClusters. if a reconciliation is triggered in between the finalizer removals, it has undesired effect of object deletion in federated cluster.

So we should remove  FinalizerDeleteFromUnderlyingClusters first and then remove FinalizerOrphan, when FinalizerOrphan is set to true.

@nikhiljindal, @madhusudancs

Automatic merge from submit-queue (batch tested with PRs 39475, 38666, 39327, 38396, 39613)

Add checking the nil value 

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

Add checking the nil value.

Thanks.

**Special notes for your reviewer**:

Automatic merge from submit-queue (batch tested with PRs 39475, 38666, 39327, 38396, 39613)

Create k8s.io/apimachinery repo

Don't panic.

The diff is quite large, but its all generated change.  The first few commits are where are all the action is.  I built a script to find the fanout from 
```
k8s.io/kubernetes/pkg/apimachinery/registered
k8s.io/kubernetes/pkg/runtime/serializer
k8s.io/kubernetes/pkg/runtime/serializer/yaml
k8s.io/kubernetes/pkg/runtime/serializer/streaming
k8s.io/kubernetes/pkg/runtime/serializer/recognizer/testing 
```

It copied 
```
k8s.io/kubernetes/pkg/api/meta
k8s.io/kubernetes/pkg/apimachinery
k8s.io/kubernetes/pkg/apimachinery/registered
k8s.io/kubernetes/pkg/apis/meta/v1
k8s.io/kubernetes/pkg/apis/meta/v1/unstructured
k8s.io/kubernetes/pkg/conversion
k8s.io/kubernetes/pkg/conversion/queryparams
k8s.io/kubernetes/pkg/genericapiserver/openapi/common - this needs to renamed post-merge.  It's just types
k8s.io/kubernetes/pkg/labels
k8s.io/kubernetes/pkg/runtime
k8s.io/kubernetes/pkg/runtime/schema
k8s.io/kubernetes/pkg/runtime/serializer
k8s.io/kubernetes/pkg/runtime/serializer/json
k8s.io/kubernetes/pkg/runtime/serializer/protobuf
k8s.io/kubernetes/pkg/runtime/serializer/recognizer
k8s.io/kubernetes/pkg/runtime/serializer/recognizer/testing
k8s.io/kubernetes/pkg/runtime/serializer/streaming
k8s.io/kubernetes/pkg/runtime/serializer/versioning
k8s.io/kubernetes/pkg/runtime/serializer/yaml
k8s.io/kubernetes/pkg/selection
k8s.io/kubernetes/pkg/types
k8s.io/kubernetes/pkg/util/diff
k8s.io/kubernetes/pkg/util/errors
k8s.io/kubernetes/pkg/util/framer
k8s.io/kubernetes/pkg/util/json
k8s.io/kubernetes/pkg/util/net
k8s.io/kubernetes/pkg/util/runtime
k8s.io/kubernetes/pkg/util/sets
k8s.io/kubernetes/pkg/util/validation
k8s.io/kubernetes/pkg/util/validation/field
k8s.io/kubernetes/pkg/util/wait
k8s.io/kubernetes/pkg/util/yaml
k8s.io/kubernetes/pkg/watch
k8s.io/kubernetes/third_party/forked/golang/reflect
```

The script does the import rewriting and gofmt.  Then you do a build, codegen, bazel update, and it produces all the updates.

If we agree this is the correct approach.  I'll create a verify script to make sure that no one messes with any files in the "dead" packages above.

@kubernetes/sig-api-machinery-misc @smarterclayton @sttts @lavalamp @caesarxuchao 

`staging/prime-apimachinery.sh && hack/update-codegen.sh && nice make WHAT="federation/cmd/federation-apiserver/ cmd/kube-apiserver" && hack/update-openapi-spec.sh && hack/update-federation-openapi-spec.sh && hack/update-codecgen.sh && hack/update-codegen.sh && hack/update-generated-protobuf.sh && hack/update-bazel.sh`

Refs #39005

Fixes #39005
Fixes #39714

Automatic merge from submit-queue (batch tested with PRs 39714, 39646)

use etcd2 as storage-backend for federation until federation features are completely tested with etcd3

**What this PR does / why we need it**: move federation etcd to etcd3

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #39594

**Special notes for your reviewer**: here is the [link](https://github.com/kubernetes/features/issues/44#issuecomment-270772674) to announcement making etcd3 as default

**Release note**:

```release-note
```

Automatic merge from submit-queue (batch tested with PRs 39714, 39646)

dockertools: fix build on OSX

#39005 introduces a build problem on OSX. This PR fixes it.

Refer [here](https://github.com/kubernetes/kubernetes/pull/39005#issuecomment-271781026).

Fix kubectl get -f <file> -o <nondefault printer> so it prints all the
objects in the file, instead of just the first one. Also add a test for
this feature.

This works around a flake I saw which had the same root cause as
https://github.com/coreos/rkt/issues/3513.

This will potentially help reduce the impact of such future problems as
well.

Automatic merge from submit-queue (batch tested with PRs 39230, 39718)

Remove special case for StatefulSets in scheduler

**What this PR does / why we need it**: Removes special case for StatefulSet in scheduler code
/ref: https://github.com/kubernetes/kubernetes/issues/39687

**Special notes for your reviewer**:

**Release note**:

```release-note
Scheduler treats StatefulSet pods as belonging to a single equivalence class.
```

Automatic merge from submit-queue (batch tested with PRs 39230, 39718)

[Federation] Kubefed init verifies if control plane pods are up before returning success

This PR updates the functionality as needed in issue https://github.com/kubernetes/kubernetes/issues/37841.

cc @kubernetes/sig-cluster-federation @nikhiljindal @madhusudancs @shashidharatd

Automatic merge from submit-queue (batch tested with PRs 39495, 39547)

Tag persistent volume PersistentVolume E2E [Volume][Serial][Flaky]

**What this PR does / why we need it**:
When run parallel with other tests that use PV(C)s, cross-test binding causes flakes.  Add `[Serial]` tag.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: f
Partly addresses #39119 
 
**Special notes for your reviewer**:
cc @saad-ali @jsafrane @jeffvance

Automatic merge from submit-queue (batch tested with PRs 39495, 39547)

kubeadm: updated preflight types to avoid stutter

Small change to kubeadm preflight pkg to remove stutter from preflight types PreFlightError and PreFlightCheck (now names Error and Checker). 

**Release note**:

`NONE`

Automatic merge from submit-queue (batch tested with PRs 39684, 39577, 38989, 39534, 39702)

kubelet: request client auth certificates from certificate API.

This fixes kubeadm and --experiment-kubelet-bootstrap.

cc @liggitt

Automatic merge from submit-queue (batch tested with PRs 39684, 39577, 38989, 39534, 39702)

kubeadm: refactored token discovery.

**What this PR does / why we need it**: refactored `kubeadm` token discovery to follow the discovery interface and use new TLS bootstrap mechanism.

/cc @luxas @mikedanese

Automatic merge from submit-queue (batch tested with PRs 39684, 39577, 38989, 39534, 39702)

Set PodStatus QOSClass field

This PR continues the work for https://github.com/kubernetes/kubernetes/pull/37968

It converts all local usage of the `qos` package class types to the new API level types (first commit) and sets the pod status QOSClass field in the at pod creation time on the API server in `PrepareForCreate` and in the kubelet in the pod status update path (second commit).  This way the pod QOS class is set even if the pod isn't scheduled yet.

Fixes #33255

@ConnorDoyle @derekwaynecarr @vishh

Automatic merge from submit-queue (batch tested with PRs 39684, 39577, 38989, 39534, 39702)

examples: fix OpenShift example

Fixes https://github.com/kubernetes/kubernetes/issues/39575

Automatic merge from submit-queue (batch tested with PRs 39684, 39577, 38989, 39534, 39702)

add subresource to forbidden message

Fixes https://github.com/kubernetes/kubernetes/issues/39640

The message will now be `user "username" cannot verb resource.group/subresource in the the namespace "ns"`.