ctlv3: print 'ETCD_INITIAL_ADVERTISE_PEER_URLS' in 'member add'

Signed-off-by: Gyu-Ho Lee <gyuhox@gmail.com>

etcdctl/ctlv3/command/member_command.go

@@ -152,6 +152,7 @@ func memberAddCommandFunc(cmd *cobra.Command, args []string) {
 		fmt.Print("\n")
 		fmt.Printf("ETCD_NAME=%q\n", newMemberName)
 		fmt.Printf("ETCD_INITIAL_CLUSTER=%q\n", strings.Join(conf, ","))
+		fmt.Printf("ETCD_INITIAL_ADVERTISE_PEER_URLS=%q\n", memberPeerURLs)
 		fmt.Printf("ETCD_INITIAL_CLUSTER_STATE=\"existing\"\n")
 	}
 }