Automatic merge from submit-queue

examples: PV docs clarify Azure storage account restriction

**What this PR does / why we need it**: One line doc fix, clarifies a constraint for using `AzureDisk` volumes.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #40276

**Special notes for your reviewer**: None

**Release note**:

```release-note
NONE
```

cc: @rootfs @otaviosoares

Automatic merge from submit-queue

GroupMetaFactoryArgs documentation

**What this PR does / why we need it**:
Documentation for people writing new API-Groups.

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

**Special notes for your reviewer**:
@deads2k @pmorie my thoughts from writing the service-catalog apiserver.

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue

Tidy up the main README.

Removed the coveralls link since it hasn't been updated in a few years. Made some punctuation more consistent.
**Release note**:
```release-note
NONE
```

Automatic merge from submit-queue

Optionally avoid evicting critical pods in kubelet

For #40573

```release-note
When feature gate "ExperimentalCriticalPodAnnotation" is set, Kubelet will avoid evicting pods in "kube-system" namespace that contains a special annotation - `scheduler.alpha.kubernetes.io/critical-pod`
This feature should be used in conjunction with the rescheduler to guarantee availability for critical system pods - https://kubernetes.io/docs/admin/rescheduler/
```

Automatic merge from submit-queue (batch tested with PRs 40696, 39914, 40374)

Convert hack/e2e.go to a test-infra/kubetest shim

Replaces `hack/e2e.go` for a shim that passes the args to `k8s.io/test-infra/kubetest`
Adds fejta to `hack/OWNERS`
Adds `e2e_test.go` for unit test coverage of the shim.

`Usage: go run hack/e2e.go [--get=true] [--old=1d] -- KUBETEST_ARGS`
In other words there is are `--get` and `--old` shim flags, which control how we upgrade `kubetest`, and a `--` to separate the shim args from the kubetest args, and the existing kubetest args like `--down` `--up`, etc. If only `KUBETEST_ARGS` are used then you can skip the `--` (although golang will complain about it).

Once this is ready to go I will update the kubekins-e2e image to copy this file from test-infra: https://github.com/kubernetes/test-infra/blob/master/jenkins/e2e-image/Dockerfile#L70

ref https://github.com/kubernetes/test-infra/issues/1475

Automatic merge from submit-queue (batch tested with PRs 40696, 39914, 40374)

Forgiveness library changes

**What this PR does / why we need it**:
Splited from #34825, contains library changes that are needed to implement forgiveness:

1. ~~make taints-tolerations matching respect timestamps, so that one toleration can just tolerate a taint for only a period of time.~~ As TaintManager is caching taints and observing taint changes, time-based checking is now outside the library (in TaintManager). see #40355.
2. make tolerations respect wildcard key.
3. add/refresh some related functions to wrap taints-tolerations operation.

**Which issue this PR fixes**: 
Related issue: #1574
Related PR: #34825, #39469 
~~Please note that the first 2 commits in this PR come from #39469 .~~

**Special notes for your reviewer**:

~~Since currently we have `pkg/api/helpers.go` and `pkg/api/v1/helpers.go`, there are some duplicated periods of code laying in these two files.~~

~~Ideally we should move taints-tolerations related functions into a separate package (pkg/util/taints), and make it a unified set of implementations. But I'd just suggest to do it in a follow-up PR after Forgiveness ones done, in case of feature Forgiveness getting blocked to long.~~

**Release note**:

```release-note
make tolerations respect wildcard key
```

Automatic merge from submit-queue (batch tested with PRs 40696, 39914, 40374)

Cleanup scheduler server with an external config class

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

Some cleanup in cmd/server so that the parts which setup scheduler configuration are stored and separately tested. 

- additionally a simple unit test to check that erroneous configs return a non-nil error is included.
- it also will make sure we  avoid nil panics of schedulerConfiguration is misconfigured.

Automatic merge from submit-queue

Fixed typo in pv_controller.go

fixes #40916

Automatic merge from submit-queue (batch tested with PRs 40862, 40909)

Remove apimachinery from staging client-go/Godeps/Godeps.json

The publishing robot will add the latest version of apimachinery to Godeps.json.

This is part of the effort to allow update staging apimachinery and staging client-go in a same PR.

The robot change is here: https://github.com/kubernetes/test-infra/pull/1784

@deads2k @stts @lavalamp

Automatic merge from submit-queue (batch tested with PRs 40862, 40909)

[Federation][kubefed] Add option to disable persistence storage for etcd

**What this PR does / why we need it**:
This is part of updates to enable deployment of federation on non-cloud environments. This pr enables disabling persistent storage for etcd via kubefed.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #40617

**Special notes for your reviewer**:

**Release note**:
```
[Federation] Add --etcd-persistent-storage flag to kubefed to enable/disable persistent storage for etcd
```
cc: @kubernetes/sig-federation-bugs @madhusudancs

Automatic merge from submit-queue (batch tested with PRs 40795, 40863)

Move pkg/genericapiserver and pkg/storage to k8s.io/apiserver

approved based on #40363

These must merge first:
- [x] genericvalidation https://github.com/kubernetes/kubernetes/pull/40810
- [x] openapi https://github.com/kubernetes/kubernetes/pull/40829
- [x] episode 7 https://github.com/kubernetes/kubernetes/pull/40853

Automatic merge from submit-queue (batch tested with PRs 40795, 40863)

Use caching secret manager in kubelet

I just found that this is in my local branch I'm using for testing, but not in master :)

robot will add the latest version of apimachinery to Godeps.json.

Automatic merge from submit-queue (batch tested with PRs 40864, 40666, 38382, 40874)

Density Test includes deletion and volumes

Moved the calls to deletePodSync to BEFORE logDensityTimeSeries.  This is because the parser considers a line printed in logDensityTimeSeries to be the "end" of the test.  This change includes deletion in the "test window", but makes no other changes.

I also added volumes to the test, so that we can make sure that mounting and unmounting volumes are also taken into account for performance profiling.

Automatic merge from submit-queue (batch tested with PRs 40864, 40666, 38382, 40874)

Promote init containers to GA

This is proposed for 1.6
PR moves beta proved concept for init containers to stable. Specification of init containers can be now stated under initContainers field in PodSpec/PodTemplateSpec. Specifying init-containers in annotation is still possible, but will be removed in future version.

```release-note
Init containers have graduated to GA and now appear as a field.  The beta annotation value will still be respected and overrides the field value.
```

Automatic merge from submit-queue (batch tested with PRs 40864, 40666, 38382, 40874)

apply falls back to generic JSON patch computation if no go struct is registered for the target GVK

This PR is the master version of #40096 which is target 1.4 branch.
This PR is based on #40260 

- [x] ensure subkey deletion works in CreateThreeWayJSONMergePatch
- [x] ensure type stomping works in CreateThreeWayJSONMergePatch
- [x] lots of tests for generic json patch computation
- [x] apply falls back to generic 3-way JSON merge patch if no go struct is registered for the target GVK
  - [x] prevent generic apply patch computation between different apiVersions and/or kinds
  - [x] make pruner generic (apply --prune works with TPR)

```release-note
apply falls back to generic 3-way JSON merge patch if no go struct is registered for the target GVK
```

Automatic merge from submit-queue (batch tested with PRs 40864, 40666, 38382, 40874)

test: reduce deployment progress deadline, ensure its rs is up

Fixes https://github.com/kubernetes/kubernetes/issues/39785 by reducing the deadline of the expected progress and making sure the new replica set is up before checking the deployment condition.

@kubernetes/sig-apps-misc

Automatic merge from submit-queue (batch tested with PRs 40884, 40809, 40845, 40866, 40875)

update repo local config to allow redirects from gopkg.in

closes #39583

Automatic merge from submit-queue (batch tested with PRs 40884, 40809, 40845, 40866, 40875)

[Federation][e2e] Fix federation admission control e2e test case

Fixes federation admission control e2e test case.

@kubernetes/sig-federation-bugs @madhusudancs

Automatic merge from submit-queue (batch tested with PRs 40884, 40809, 40845, 40866, 40875)

Remove many job e2e tests.

These tests have equivalent unit test coverage as far as I can tell, in [pkg/controller/job/jobcontroller_test.go](https://github.com/kubernetes/kubernetes/blob/master/pkg/controller/job/jobcontroller_test.go). See #40839 for context.

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

Automatic merge from submit-queue (batch tested with PRs 40884, 40809, 40845, 40866, 40875)

Add env variable to build federation images locally. #39870

This allows building the federation images without the need for cloud development packages

Related: #39870

Automatic merge from submit-queue (batch tested with PRs 40884, 40809, 40845, 40866, 40875)

Node E2E: Create new ubuntu image with docker 1.12.6.

We should test the newest docker 1.12 version - 1.12.6.

/cc @dchen1107 @yujuhong @kubernetes/sig-node-pr-reviews

Automatic merge from submit-queue

Release API watch resources when done.