and make container probing test shared to validate.

Automatic merge from submit-queue

Fix typos in volume.go

Fixed some minor typos in the docs of `volume.go`.

Automatic merge from submit-queue

Doc referrence "container-id" incorrect

File "docs\proposals\disk-accounting.md", line 154, "Everything under  `/var/lib/docker/overlay/<container-id>` are files required for running the container", here "container-id" is incorrect because files under "/var/lib/docker/overlay" are layer files, and  "container-id"  should be "id" thus consistent with line 148 "Image layers and writable layers are stored under `/var/lib/docker/overlay/<id>`".

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Update golang.org/x/net godep for http2 issues being seen during scale

This is to address https://github.com/kubernetes/kubernetes/issues/29001 , 

"Header called after Handler finished".   There are a number of race fixes. 

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Don't recreate lb cloud resources on kcm restart

Absolute dumbest way to fix it right now.
Fixes https://github.com/kubernetes/kubernetes/issues/29079

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Document auto-close on stale pull-request

Document the change made by https://github.com/kubernetes/contrib/pull/891.

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Custom conversions between RCs/RSs

Needed for building storages that still need to work with RCs but also want to facilitate RSs.

cc: @deads2k @smarterclayton @liggitt 

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Ignore GREP_OPTIONS/GREP_COLOR

On OSX - default BSD grep breaks gen_conversion. Let's just
make sure we use --color=never everywhere, so we don't trip
over GREP_OPTIONS/GREP_COLOR in a user environment.

Fixes #29013

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authorize based on user.Info

Update the `authorization.Attributes` to use the `user.Info` instead of discrete getters for each piece.

@kubernetes/sig-auth 

On OSX - default BSD grep breaks gen_conversion. Let's just
make sure we use --color=never everywhere, so we don't trip
over GREP_OPTIONS/GREP_COLOR in a user environment.

Fixes #29013

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List all nodes and occupy cidr map before starting allocations

Manually tested by starting a 200 node cluster with frequent controller manager restarts.
Fixes https://github.com/kubernetes/kubernetes/issues/29058

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Fix GPU resource validation

This fixes scheduling of pods with GPU resources. The change was never upstreamed during the 1.3 beta period, as it got lost in the noise of other changes in our fork. Ooops. I'll submit a cherry-pick request for 1.3.1 as soon as this lands in master.

Because of defaulting, requests are always set if limits are. Thus, the check can never succeed. Instead, make sure that the two values are equal.

Also, remove a few other error messages and remove unnecessary Sprintf calls.

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Make PD E2E Tests Wait for Detach to Prevent Kernel Errors

Fixes https://github.com/kubernetes/kubernetes/issues/28854

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Added instructions on turning on dynamic provisioning for testing.

HostPath volumes are not automatically provisioned unless we pass in `--enable-hostpath-provisioner` to the controller manager. This was not mentioned in the docs previously, leading to questions like [this](https://groups.google.com/forum/#!searchin/kubernetes-dev/mysterious/kubernetes-dev/jVk_RgAkbaY/LRX7IuCEDQAJ).

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Only run federation tests if FEDERATION==true.

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Delete duplicated code

The code block below is called twice sequentially in func `doTestPlugin`.
.
```go
 	if _, err := os.Stat(path); err != nil {
 		if os.IsNotExist(err) {
 			t.Errorf("SetUp() failed, volume path not created: %s", path)
 		} else {
 			t.Errorf("SetUp() failed: %v", err)
 		}
 	}
```

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rkt: Copy the /etc/hosts /etc/resolv.conf into pod dir before mounting.

rkt: Copy the /etc/hosts /etc/resolv.conf into pod dir before mounting.
    
This enables the container to modify the /etc/hosts/ /etc/resolv.conf without changing the host's ones.
With this PR, we now match the docker's behavior.

Fix https://github.com/kubernetes/kubernetes/issues/29022

cc @kubernetes/sig-rktnetes @quentin-m 

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Scale kube-proxy conntrack limits by cores (new default behavior)

For large machines we want more conntrack entries than smaller machines.

Commence bike-shedding on names and values and semantics.  I'd love to get this in as a patch to 1.3.x since we have had some trouble for users on large machines.

Fixes #28867

This enables the container to modify the /etc/hosts/ /etc/resolv.conf
without changing the host's ones.

With this PR, we now match the docker's behavior.

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Fix a bug in mirror pod node e2e test.

Fixed a bug in test/e2e_node/mirror_pod_test.go. The function 'checkMirrorPodDisappear' returns nil even when the pod does not disappear. It should return a non-nil error. 

@Random-Liu 

For large machines we want more conntrack entries than smaller machines.

This is the same test we make everywhere else.  Only here were we
checking against the empty string.

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Undelete generated files

There's been enough people broken by not committing generated code, that we
should undo that until we have a proper client that is `go get` compatible.

This is temporary.

Fixes #28920

tests

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Splitting OS_DISTRIBUTION into NODE_OS_DISTRIBUTION and MASTER_OS_DISTRIBUTION

fixes #26183 
[![Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/.github/PULL_REQUEST_TEMPLATE.md?pixel)]()

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Better handle etcd compaction in multi-apiserver

What:
- Change etcd compaction routine to better handle multi-apiserver (HA) scenarios. See the docs in code.

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Fix make to include line-continuations

This got broken in recent changes.  Sorry for the noise.

MASTER_OS_DISTRIBUTION.

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[Kubelet] Improving QOS in kubelet by introducing QoS level Cgroups - `--cgroups-per-qos`

This PR is tied to this upstream issue #27204 
Please note that only the last commit is unique to this PR. The first two commits are from previous PR's.

It introduces a new flag in the Kubelet which can be used to specify if the user wants to use the QoS cgroup hierarchy. 

cc @kubernetes/sig-node

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move api.ObjectReference.ObjectKind to pkg/api/ref.go

This is needed to convert k8s components to use versioned clientset.

To let components use versioned client, we need to convert `pkg/client/record` to v1, which depends on `pkg/api/ref.go`, so we need to make a `pkg/api/v1/ref.go`. And this [line](https://github.com/kubernetes/kubernetes/blob/master/pkg/api/ref.go#L44) requires v1.ObjectReference to be a runtime.Object. Moving `api.ObjectReference.ObjectKind` to `pkg/api/ref.go` will make the writing a conversion script easier because all the necessary changes will be restricted in `ref.go`.

Automatic merge from submit-queue

Fix build for non-GOPATH users

I want feedback on this.  There are 2 commits here, we should probably only do one of them.  The release note will depend on which one we choose.  Also docs need update.

Fixes #28890
Fixes #28987

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move kube-dns to the cluster/addons/ directory

Fixes #28553

cc @girishkalele @bprashanth 

There's been enough people broken by not committing generated code, that we
should undo that until we have a proper client that is `go get` compatible.

This is temporary.