Merge pull request #386 from moelsayed/etcd_restart

Fix etcd process regression

cluster/plan.go

@@ -397,6 +397,7 @@ func (c *Cluster) BuildEtcdProcess(host *hosts.Host, etcdHosts []*hosts.Host) v3
 		Args:          args,
 		Binds:         Binds,
 		NetworkMode:   "host",
+		RestartPolicy: "always",
 		Image:         c.Services.Etcd.Image,
 		HealthCheck:   healthCheck,
 	}