Go mistreats "testdata" and can't find vendor/ dirs.

The build is now fast enough to not need them.

Fix the licenses script and run it.

Our `realpath` and `readlink -f` functions (required only because of MacOS,
thanks Steve) were poor substitutes at best.  Mostly they were downright
broken.  This thoroughly overhauls them and adds a test (in comments, since we
don't seem to have shell tests).  For all the interesting cases I could think
of, the fakes act just like the real thing.

Then use those and canonicalize KUBE_ROOT.  In order to make recursive calls of
our shell tool not additively grow `pwd` we have to essentially make the
sourcing of init.sh idempotent.

godep restore
pushd $GOPATH/src/github.com/appc/spec
git co master
popd
go get go4.org/errorutil
rm -rf Godeps
godep save ./...
git add vendor
git add -f $(git ls-files --other vendor/)
git co -- Godeps/LICENSES Godeps/.license_file_state Godeps/OWNERS

Automatic merge from submit-queue

kubelet: Remove redundant `Container.Created`

As far as I can tell, this has been supplanted by a) the `DockerJSON.CreatedAt` field and b) the
`ContainerStatus.CreatedAt`, where the first is used for creating the
second.

The `.Created` field was only written to as far as I can see.

cc @yifan-gu & @Random-Liu 

Is there any reason we might want to keep this around? 

Automatic merge from submit-queue

Introduce events flag for describers

Printing events for a given object is not always needed. Thus, introducing --show-events=false to ``kubectl describe`` to skip events printing.

Fixes: #24239 

Automatic merge from submit-queue

 Abstract node side functionality of attachable plugins

- Create PhysicalAttacher interface to abstract MountDevice and
  WaitForAttach.
- Create PhysicalDetacher interface to abstract WaitForDetach and
  UnmountDevice.
- Expand unit tests to check that Attach, Detach, WaitForAttach,
  WaitForDetach, MountDevice, and UnmountDevice get call where
  appropriet.

Physical{Attacher,Detacher} are working titles suggestions welcome. Some other thoughts:
- NodeSideAttacher or NodeAttacher.
- AttachWatcher
- Call this Attacher and call the Current Attacher CloudAttacher.
- DeviceMounter (although there are way too many things called Mounter right now :/)

This is to address: https://github.com/kubernetes/kubernetes/pull/21709#issuecomment-192035382

@saad-ali 

Automatic merge from submit-queue

Support persisting config from kubecfg AuthProvider plugins

Plumbs through an interface to the plugin that can persist a `map[string]string` config for just that plugin. Also adds `config` to the AuthProvider serialization type, and `Login()` to the AuthProvider plugin interface.
Modified the gcp AuthProvider to cache short-term access tokens in the kubecfg file.

Builds on #23066 
@bobbyrullo @deads2k @jlowdermilk @erictune 

Automatic merge from submit-queue

kubectl describe: show multiple labels/annotations on multiple lines

Small UX improvement: when there is more than one label/annotation, it's more readable to see them on the different lines.

Before:
```console
$ kubectl describe svc
Name:			s2i-test
Namespace:		test2
Labels:			app=s2i-test,foo=bar
...
```
After:
```console
$ kubectl describe svc
Name:			s2i-test
Namespace:		test2
Labels:			app=s2i-test
				foo=bar
...
```
This change affects output of the labels/annotations in many of the sub-commands of the `kubectl describe`.

PTAL @smarterclayton @kargakis

Automatic merge from submit-queue

add namespace index for cache

@wojtek-t 

Implement in this approach make the change of lister.go small, but we should replace all `NewInformer()` to `NewIndexInformer()`, even when someone not want to filter by namespace(eg. gc_controller and scheduler). Any suggestion?

Automatic merge from submit-queue

Update adding-an-APIGroup.md for #23110

Change the doc to point at the new conversion/deep-copy binaries instead of the old scripts.

Automatic merge from submit-queue

run kube-addon-manager in a static pod

Depends on https://github.com/kubernetes/kubernetes/pull/23605 and https://github.com/kubernetes/kubernetes/pull/24108

Ref #23233 

Automatic merge from submit-queue

kubectl: more sophisticated pod selection for logs and attach

Trying to get the logs or attach to an object other than a pod
will poll forever if that object has no replicas. This commit adds
a 20s timeout for polling.

@kubernetes/kubectl @deads2k @fabianofranz 

Automatic merge from submit-queue

Reimplement 'pause' in C - smaller footprint all around

Statically links against musl. Size of amd64 binary is 3560 bytes.

I couldn't test the arm binary since I have no hardware to test it on, though I assume we want it to work on a raspberry pi.

This PR also adds the gcc5/musl cross compiling image used to build the binaries.

@thockin

Automatic merge from submit-queue

Add subPath to mount a child dir or file of a volumeMount

Allow users to specify a subPath in Container.volumeMounts so they can use a single volume for many mounts instead of creating many volumes. For instance, a user can now use a single PersistentVolume to store the Mysql database and the document root of an Apache server of a LAMP stack pod by mapping them to different subPaths in this single volume.

Also solves https://github.com/kubernetes/kubernetes/issues/20466.

Automatic merge from submit-queue

Automatically Add Supplemental Groups from Volumes to Pods

This adds support for a "GID" annotation that one can add to their PVs. When this annotation is seen the kubelet automatically adds the given GID to the list of supplemental groups for the pod to which the PV is attached. This allows admins to create volumes and suggest a GID to use to access the volume. This is needed for volumes which do not support ownership management such as NFS.

@markturansky PTAL

Automatic merge from submit-queue

Fix parallel image pullers event messages with reasons constants.

Automatic merge from submit-queue

Handle image digests in node status and image GC

Start including Docker image digests in the node status and consider image digests during image
garbage collection.

@kubernetes/rh-cluster-infra @kubernetes/sig-node @smarterclayton 

Fixes #23917

Automatic merge from submit-queue

Remove all reflection for locating defaulting functions

Instead of reflecting to access defaulters, generate them inline as public method calls which removes the need to allocate (reflection is expensive in terms of allocation).

Benefits protobuf much more than JSON, since protobuf is faster than conversion while JSON is 5x slower.

First two commits in #24907

```
benchmark                                      old ns/op     new ns/op     delta
BenchmarkPodConversion-8                       16122         9511          -41.01%
BenchmarkNodeConversion-8                      16510         12798         -22.48%
BenchmarkReplicationControllerConversion-8     16334         10316         -36.84%
BenchmarkEncodeCodecFromInternalProtobuf-8     15663         12486         -20.28%
BenchmarkDecodeCodecToInternalProtobuf-8       21473         17914         -16.57%
BenchmarkEncodeCodecFromInternal-8             39702         36185         -8.86%
BenchmarkDecodeCodec-8                         94954         87997         -7.33%
BenchmarkDecodeIntoInternalCodec-8             92392         88090         -4.66%

benchmark                                      old allocs     new allocs     delta
BenchmarkPodConversion-8                       80             44             -45.00%
BenchmarkNodeConversion-8                      113            93             -17.70%
BenchmarkReplicationControllerConversion-8     78             46             -41.03%
BenchmarkEncodeCodecFromInternalProtobuf-8     63             46             -26.98%
BenchmarkDecodeCodecToInternalProtobuf-8       132            115            -12.88%
BenchmarkEncodeCodecFromInternal-8             97             80             -17.53%
BenchmarkDecodeCodec-8                         316            299            -5.38%
BenchmarkDecodeIntoInternalCodec-8             317            300            -5.36%

benchmark                                      old bytes     new bytes     delta
BenchmarkPodConversion-8                       9133          4666          -48.91%
BenchmarkNodeConversion-8                      8957          6371          -28.87%
BenchmarkReplicationControllerConversion-8     9373          5339          -43.04%
BenchmarkEncodeCodecFromInternalProtobuf-8     7720          5800          -24.87%
BenchmarkDecodeCodecToInternalProtobuf-8       10126         8124          -19.77%
BenchmarkEncodeCodecFromInternal-8             9876          7945          -19.55%
BenchmarkDecodeCodec-8                         17402         15401         -11.50%
BenchmarkDecodeIntoInternalCodec-8             17482         15481         -11.45%
```

Automatic merge from submit-queue

Move inter-pod affinity predicate and priority functions from default to non-default due to negative performance effects even when not using the feature

Also disable e2e's that assume the feature is enabled.

cc/ @gmarek @wojtek-t @kevin-wangzefeng 

non-default due to negative performance effects even when not using
the feature.

Start including Docker image digests in the node status and consider image digests during image
garbage collection.