Support dumping logs from Windows test nodes on GCE

add more fields to be stripped from managedFields

GCE/Windows: create a C:\tmp directory

kubeadm: Join download certs

Ensure that pods obey backoff timers.

make audit metadata work for custom resources

kubeadm cleanup: master -> control-plane (cont.6)

fix golint failures for test/e2e/cloud|kubectl|servicecatalog

Fix golint under test/e2e/framework/ingress

fix golint failures for test/e2e/ui

Avoid using ghodss/yaml - switch to our forked repo

Adding Selinux test in validation

This implements the certificate download for the join process. If certificates
have been uploaded during init (or explicitly on any master node) and the secret
is still present in the cluster, the join process will try to download the secret
data, decrypting it with the provided key in the new `--certificate-key` flag.

Don't fail if iface is being used by iSCSI session

Add port constants

Explicitly set GVK when sending objects to webhooks

Remove deprecated versionless client interface methods

kubeadm: reduce the number of fetch configuration when reset

Tested:
```
$ PROJECT=${CLOUDSDK_CORE_PROJECT} KUBERNETES_SKIP_CONFIRM=y NUM_NODES=2 \
  NUM_WINDOWS_NODES=2 KUBE_GCE_ENABLE_IP_ALIASES=true go run \
  ./hack/e2e.go -- --up
$ cluster/log-dump/log-dump.sh
$ ls _artifacts
```

And with: NUM_NODES=2 NUM_WINDOWS_NODES=0; NUM_NODES=0 NUM_WINDOWS_NODES=2

* merge pkg/api/v1/node with pkg/util/node

* update test case for utilnode

* remove package pkg/api/v1/node

* move isNodeReady to internal func

* Split GetNodeCondition into e2e and controller pkg

* fix import errors

kubectl run --quiet suppresses deletion messages

Add Custom Resource support to "kubectl autoscale"

Always run untag when removing docker image

Add new Japanese translations for kubectl

This is required for running host path tests.

The function AddUnschedulableIfNotPresent is responsible for
initializing or updating backoff timers for pods that could not be
scheduled. The helper function backoffPod does that work, but was not
being called in all cases.

This moves that call to be (mostly) unconditional, while cleaning up
comments and error handling.

updated elasticsearch to 6.6.1

fix typo kubeadm joiń -> kubeadm join

Fix fluentd-gcp addon liveness probe

tests: Separates DNS hosts entries test

kube-aggregator: fix typo aggregator_unavailable_api{server -> service}_{gauge,}