Added waiting for status

Author: haphan

samples/compute/v2/servers/confirm_server_resize.php

@@ -18,4 +18,5 @@
     'id' => '{serverId}',
 ]);
 
+$server->waitUntil('VERIFY_RESIZE');
 $server->confirmResize();

samples/compute/v2/servers/unrescue_server.php

@@ -18,4 +18,5 @@
     'id' => '{serverId}',
 ]);
 
+$server->waitUntil('RESCUE');
 $server->unrescue();