Add 'wait_for_no_relocating_shards' to Cluster/Health whitelist

Author: polyfractal

src/Elasticsearch/Endpoints/Cluster/Health.php

@@ -45,6 +45,7 @@ public function getParamWhitelist()
             'wait_for_relocating_shards',
             'wait_for_status',
             'wait_for_events',
+            'wait_for_no_relocating_shards'
         );
     }