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move informer and controller to pkg/client/cache

@kubernetes/sig-api-machinery

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Centralize install code

Trying to figure out a way to do this that makes the changes as painless to roll out as possible. This is going to be a multi-step process...

[kubelet] Fix oom-score-adj policy in kubelet

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use discovery restmapper for kubectl

Updates the `kubectl` factory to use a discovery rest mapper for locating resources.  This allows generic gets.

@kargakis @sttts @fabianofranz I'll let you guys fight over it. :)

Revert "Add test for --quiet flag for kubectl run"

Signed-off-by: Mike Danese <mikedanese@google.com>

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Fix node upgrade in e2e tests

This is fixing automatic ugprade tests in GCE

@davidopp @pwittrock

This reverts commit 9e52d1cf.

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docs: devel: tell people how to find flake tests

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Clarify the "version" requirement in CRI and fix various bugs in dockershim

This fixes #32741

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Fix typo in scheduler doc

Also add parentheses

This doc talks about flake tests but never links to all of them. Fix
this so people can dive in.

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Fix logging in cacher

@smarterclayton @liggitt @hongchaodeng

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restrict discoverable versions to those that have resources

Prevents versions with no resources from appearing in discovery.

@soltysh ptal.  I think you have some issues for this, mind wiring them up?

```
kubectl api-versions
apps/v1alpha1
authentication.k8s.io/v1beta1
authorization.k8s.io/v1beta1
autoscaling/v1
batch/v1
certificates.k8s.io/v1alpha1
extensions/v1beta1
policy/v1alpha1
rbac.authorization.k8s.io/v1alpha1
storage.k8s.io/v1beta1
v1
```
Fixes  #29998.

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Exit scheduler retry loop correctly

The error was being eaten and shadowed, which means we would never exit
this loop. This might lead to a goroutine in the scheduler being used
forever without exiting at maximum backoff.

Switched to use the real client to make later refactors easier.

@wojtek-t this may lead to scheduler informer exhaustion - not that familiar with retries

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Revert "Use PV shared informer in PV controller"

Fixes #32497 

Reverts kubernetes/kubernetes#30825

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Revert "Revert "Allow webhook authenticator to use TokenReviewsInterface""

Reverts https://github.com/kubernetes/kubernetes/pull/32591 (commit 0a02c827)
Readds https://github.com/kubernetes/kubernetes/pull/32547

Holding until GKE webhook authenticator is updated by @cjcullen

Reduce maximum number of net-proxy pods to make test work in large cl…

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Kubelet: add garbage collection for new runtime API

This PR adds garbage collection for new runtime API.

Note that this PR also adds `CreatedAt` and `PodSandboxId` to `ListContainers()` result.

CC @yujuhong @Random-Liu  @kubernetes/sig-node @kubernetes/sig-rktnetes

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Added --log-facility flag to enhance dnsmasq logging

Fix #31010.

Dnsmasq in kube-dns pod is logging in default setting, which is somehow hard to locate. Add --log-facility=- flag to redirect logs to std.

@girishkalele

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Unstructured methods belong in unstructured.go

Simple code move

@krousey just movement

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Set Dashboard UI to final 1.4 version

Release info: https://github.com/kubernetes/dashboard/releases/tag/v1.4.0

Diff since beta2: a few bug fixes.

This is final release for this quarter.

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Set --alsologtostderr=true in integration test

Without the flag, no glog output are stored in the test results. The logs are useful for debugging flaky tests like https://github.com/kubernetes/kubernetes/issues/30228.

The change also reveals a lot of messages like `W0912 14:19:32.306719   25386 cacher.go:468] Terminating all watchers from cacher *api.LimitRange`, which doesn't seem right.

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Fix audit_test regex for iso8601 timestamps

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**What this PR does / why we need it**:  The audit_test unit test fails as some iso8601 timestamps are of the form 2016-09-13T10:32:50.823081217Z and the current regex doesn't allow T's or Z's.

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

**Special notes for your reviewer**:

**Release note**:NONE
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```release-note
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Signed-off-by: Johnny Bieren <jbieren@redhat.com>

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Add glusterfs-client in hyperkube image.

When we run kubernete in a docker container, the glusterfs volume doesn't work.
This PR add glusterfs-client package in hyperkube image to fix the bug.

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fix hack/verify-golint.sh on a Mac

Relax the location of the files a bit (Don't assume the
k8s.io/kubernetes always!)

Fixes #31905

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EnableGarbageCollection should be part of generic.RESTOptions

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Do not report warning event when an unknown deleter is requested

When Kubernetes does not have a plugin to delete a PV it should wait for
either external deleter or storage admin to delete the volume instead of
throwing an error.

This is the same approach as in #32077

@kubernetes/sig-storage

Not a global. Now that we have RESTOptions this was an easy change.

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Etcd3 v3client + grpc client leak fix

This re-enables the client and plumbs through the destroyFunc to cleanup clients. 

Fix for https://github.com/kubernetes/kubernetes/issues/31262

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AWS: Reduce frequency of volume-mount poll