Add machine add option in paictl

[ydye]

Add machine from node-list.
The nodelist.yaml format

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machine-list:

    - hostname: host1 # echo `hostname`
      hostip: 192.168.1.11
      machine-type: D8SV3
      etcdid: etcdid1
      sshport: PORT
      username: username
      password: password
      k8s-role: master
      dashboard: "true"
      zkid: "1"
      pai-master: "true"

    - hostname: host2
      hostip: 192.168.1.12
      machine-type: NC24R
      sshport: PORT
      username: username
      password: password
      k8s-role: worker
      pai-worker: "true"

The command:

./paictl.py machine add -p /conf/path -l nodelist.yaml

The supported node type：

master and worker

[ydye]

Test result

root@dev-box:~/pai/pai-management# kubectl exec -it etcd-server-10.240.0.6 etcdctl member list
17f4464cf534b2c8: name=etcdid5 peerURLs=http://10.240.0.6:2380 clientURLs=http://10.240.0.6:4001 isLeader=false
20255328899b8c2e: name=etcdid4 peerURLs=http://10.240.0.5:2380 clientURLs=http://10.240.0.5:4001 isLeader=false
abb4499d886b40e0: name=etcdid2 peerURLs=http://10.240.0.12:2380 clientURLs=http://10.240.0.12:4001 isLeader=true
eef97f15c8e64b72: name=etcdid3 peerURLs=http://10.240.0.13:2380 clientURLs=http://10.240.0.13:4001 isLeader=false
f614574e9935e3db: name=etcdid1 peerURLs=http://10.240.0.10:2380 clientURLs=http://10.240.0.10:4001 isLeader=false
root@dev-box:~/pai/pai-management# kubectl exec -it etcd-server-10.240.0.6 etcdctl cluster-health
member 17f4464cf534b2c8 is healthy: got healthy result from http://10.240.0.6:4001
member 20255328899b8c2e is healthy: got healthy result from http://10.240.0.5:4001
member abb4499d886b40e0 is healthy: got healthy result from http://10.240.0.12:4001
member eef97f15c8e64b72 is healthy: got healthy result from http://10.240.0.13:4001
member f614574e9935e3db is healthy: got healthy result from http://10.240.0.10:4001
cluster is healthy

[coveralls]

Coverage increased (+11.5%) to 71.356% when pulling 1384d36 on yuye/k8s-machine-master-add into c526da7 on master.