testDanglingIndicesConflictWithAlias - wait for node left to be processed

O.w. delete index command may time out waiting for the node that left to confirm deletion

src/test/java/org/elasticsearch/gateway/local/LocalGatewayIndexStateTests.java

@@ -293,6 +293,8 @@ public class LocalGatewayIndexStateTests extends ElasticsearchIntegrationTest {
 
         internalCluster().stopRandomNonMasterNode();
 
+        // wait for master to processed node left (so delete won't timeout waiting for it)
+        assertFalse(client().admin().cluster().prepareHealth().setWaitForNodes("1").get().isTimedOut());
 
         logger.info("--> deleting index");
         assertAcked(client().admin().indices().prepareDelete("test"));