Add test case for validate container cannot write to readonly volumes

[scheduler] Modify the scheduling result struct and improve logging f…

apiserver: start only one compactor per unique storagebackend transport config

Adding cheftako to reviewers

kubeadm: cleanup etcd client

kubeadm: imports cleanup

AWS NLB: Support cross-zone load balancing annotation

Typo fix: control plan->control plane

Clean unused function in pkg/kubelet/kubelet.go

kubeadm: use T.Run API in app/

correctly update pod ready condition

Allow enabling/disabling specific extensions/v1beta1 resources

AWS Network Load Balancer recently got support for cross-zone load balancing.

Use the existing `service.beta.kubernetes.io/aws-load-balancer-cross-zone-load-balancing-enabled`
annotation to configure it.

Fix typo cgroupDriver -> cgroup-driver

kubeadm: add required etcd certs to selfhosting api-server

Used T.Run API for kubeadm tests in app/

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

Typo fix: control plan->control plane

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

Signed-off-by: Xin Wang <wileywang@yunify.com>

Typo fix for changelog-1.10