support for install/setup of etcd master node

[kmova]

maya cli should include an option to setup etcd-master. The command could be:

maya setup-etcd-master [args....]

arguments could include the listen/expose/advertise ip addresses, peer etcd-master addresses, certificates etc., Use the following steps as a sample for installing the etcd.

sudo apt-get install etcd

Config parameters could be:

ETCD_NAME=k8s-master-1
ETCD_DATA_DIR="/var/lib/etcd"
ETCD_LISTEN_PEER_URLS="https://172.28.128.10:2380"
ETCD_LISTEN_CLIENT_URLS="https://172.28.128.10:2379,http://localhost:2379"
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://172.28.128.10:2380"
ETCD_INITIAL_CLUSTER="k8s-master-1=https://172.28.128.10:2380"
ETCD_INITIAL_CLUSTER_STATE="new"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster-0"
ETCD_ADVERTISE_CLIENT_URLS="https://172.28.128.10:2379"
ETCD_CERT_FILE="/etc/etcd/client.crt"
ETCD_KEY_FILE="/etc/etcd/client.key"
ETCD_TRUSTED_CA_FILE="/etc/etcd/ca.crt"
ETCD_PEER_CERT_FILE="/etc/etcd/client.crt"
ETCD_PEER_KEY_FILE="/etc/etcd/client.key"
ETCD_PEER_TRUSTED_CA_FILE="/etc/etcd/ca.crt"