Etcd restart always (#1539)

* Added cmd to restart etcd always

* Fixed etcd restart always

restart=always for etcd instead of etcd2

parts/kubernetesmastercustomdata.yml

@@ -342,6 +342,8 @@ runcmd:
 - sudo /bin/chown -R etcd:etcd /var/lib/etcddisk
 - systemctl stop etcd
 - sudo -u etcd rm -rf /var/lib/etcd/default
+- sudo /bin/sed -i s/Restart=on-abnormal/Restart=always/g /lib/systemd/system/etcd.service
+- systemctl daemon-reload
 - systemctl restart etcd
 - for i in $(seq 1 20); do curl --max-time 60 http://127.0.0.1:2379/v2/machines; [ $? -eq 0 ] && break || sleep 5; done
 - retrycmd_if_failure() { for i in 1 2 3 4 5; do $@; [ $? -eq 0  ] && break || sleep 5; done ; }