cephfs-provisioner: Upgrade to v2.1.0-k8s1.11

coredns: Upgrade to v1.2.2

Upstream Changes:

-   cephfs-provisioner v2.1.0-k8s1.11 (https://github.com/kubernetes-incubator/external-storage/releases/tag/cephfs-provisioner-v2.1.0-k8s1.11)

Our Changes:

-   Sync clusterrole and role with upstream changes

Fix ports for kubeadm client and master configs for ha setups

Upstream Changes:

-   coredns v1.2.2 (https://github.com/coredns/coredns/releases/tag/v1.2.2)

NOTE:

-   coredns image for 1.2.0 and 1.2.1 had been removed from https://console.cloud.google.com/gcr/images/google-containers/GLOBAL/coredns

Fix docker_options definition to remove newlines

Fix target hosts generation when /etc/hosts does not contain 127.0.0.1 or ::1

Add documentation about having HA for etcd

etcd_events_access_address should be used for peer_url and client_url

Add support for etcd arm64

Update readme

Fix copy etcd-ssl-ca failed

Fix ipvs by kubeadm v1alpha1

Mount /root/.kube to helm container

Fix kubeadm-config for audit-log-path and feature-gates

Fix kubeadm v1alpha1 configure

Fix some addons when PodSecurityPolicy is enabled

Add mirwan as Reviewer

Enable kubeadm test

Need to test the kubeadm deployment cluster, most of the functional changes, will involve kubeadm.