Fix order-dependent flakiness in KubernetesReconcilerCreatorTest.java

Author: yijut2

spring/src/test/java/io/kubernetes/client/spring/extended/controller/KubernetesReconcilerCreatorTest.java

@@ -202,5 +202,6 @@ public void testSimplePodController() throws InterruptedException {
       fail();
     }
     assertEquals("foo", workQueue.get().getName());
+    sharedInformerFactory.stopAllRegisteredInformers();
   }
 }