kubeadm: add required etcd certs to selfhosting api-server

add myself to cmd/[kube-]controller-manager OWNERS

fix typo: if -> it

Selfhosting pivoting fails when using --store-certs-in-secrets
as api-server fails to start because of missing etcd/ca and
apiserver-etcd-client certificates:
   F1227 16:01:52.237352 1 storage_decorator.go:57] Unable to create storage backend:
   config (&{ /registry [https://127.0.0.1:2379]
              /etc/kubernetes/pki/apiserver-etcd-client.key
              /etc/kubernetes/pki/apiserver-etcd-client.crt
              /etc/kubernetes/pki/etcd/ca.crt true 0xc000884120 <nil> 5m0s 1m0s}),
   err (open /etc/kubernetes/pki/apiserver-etcd-client.crt: no such file or directory)

Added required certificates to fix this.

Secret name for etc/ca certifcate has been converted to conform RFC-1123 subdomain
naming conventions to prevent this TLS secret creation failure:
    unable to create secret: Secret "etcd/ca" is invalid: metadata.name:
    Invalid value: "etcd/ca": a DNS-1123 subdomain must consist of lower
    case alphanumeric characters, '-' or '.', and must start and end with an
    alphanumeric character (e.g. 'example.com', regex used for validation is
    '[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*')

Related issue: kubernetes/kubeadm#1281

Fix a typo

fix typo: if -> it

fix tabwriter to remember column widths, align `kubectl get -w` output

Log more details when we get the 0-length error

Change-Id: I9733521a3afd91c54c19fe08d0622df4187c0c0c

Moved token related flags to constants.

update the feature comment

Exclude by default address flag fix #1234

kubeadm: use T.Run API in app/cmd

Typo fix for changelog-1.10

Look up service accounts from informer before trying live lookup

Use prometheus conventions for workqueue metrics

update notes

Use shareable IPC for sandbox container

Make error messages more helpful in some e2e tests

Moved token related flags to constants.

Token related flags refactored into constants.

Moved token related flags to constants.

Used new Consts flags in api's validation

Build deps fix

Moved token related flags to constants.

Used new Consts flags in api's validation

Build deps fix

Lint fix

Lint BUILD

Commenting error in ItemExponentialFailureRateLimiter

fix typo replacee -> replace

Used T.Run API for kubeadm tests in app/cmd

This should improve testing output and make it more visible
which test is doing what.

kubeadm: use T.Run API in app/apis/kubeadm

Used T.Run API for kubeadm tests in app/apis/kubeadm

This should improve testing output and make it more visible
which test is doing what.

RunAsGroup - Update DropDisabled[Alpha]Fields behaviour

CRD: Update drop disable fields behavior 

kubeadm: use T.Run API in app/util

Fix a race in setting nominated node and the scheduling cycle after it.

Update feature-gate handling of TTLSecondsAfterFinished

Validate PSP allowedProcMountTypes

Vendor golint in k/k, and use the vendor version in verify-golint check