[wko-nightly] Fix the failure from ItMiiClusterResource/testSharedClusterResource to delete shared-cluster (#3891)

* [wko-nightly] Fix the failure from ItMiiClusterResource/testSharedClusterResource to delete shared-cluster

Author: hzhao-github

integration-tests/src/test/java/oracle/weblogic/kubernetes/utils/ClusterUtils.java

@@ -119,9 +119,9 @@ public static void deleteClusterCustomResourceAndVerify(String clusterName, Stri
     Cluster.deleteClusterCustomResource(clusterName, namespace);
 
     testUntil(
+        withLongRetryPolicy,
         clusterDoesNotExist(clusterName, CLUSTER_VERSION, namespace),
-        getLogger(),
-        "cluster {0} to be created in namespace {1}",
+        getLogger(), "Waiting to delete cluster custom resource {0} in namespace {1}",
         clusterName,
         namespace);
   }