added alert manager using alert branch temp6

Author: marinakog

integration-tests/src/test/java/oracle/kubernetes/operator/ItMonitoringExporter.java

@@ -850,8 +850,8 @@ private void fireAlert() throws Exception {
 
     TestUtils.checkPodReady("domain1-admin-server", "default");
     TestUtils.checkPodReady("domain1-managed-server-1", "default");
-    //sleep for 1 min to fire alert
-    Thread.sleep(60000);
+    //sleep for 1.30 min to fire alert
+    Thread.sleep(90000);
     String webhookPod = getPodName("webhook", "webhook");
     String command = "kubectl -n webhook logs " + webhookPod;
     ExecResult webhookResult = TestUtils.exec(command);