[test_verify_email] Update log check

* update the tasks to remove grep and wc
* add a second task to wait for an update in the log

roles/test_verify_email/tasks/main.yml

@@ -46,9 +46,21 @@
     - name: "RHELOSP-176045 Check for alertmanager logs"
       ansible.builtin.shell:
         cmd: |
-          oc logs alertmanager-default-0 -c alertmanager  | grep 'receiver=email' | wc -l
+          oc logs alertmanager-default-0 -c alertmanager
       register: cmd_output
-      failed_when: "cmd_output.stdout|int == 0"
+      failed_when:
+        - "cmd_output.stdout_lines | length == 0"
+        - "'receiver=email' not in cmd_outout.stdout"
+      changed_when: false
+
+    - name: "RHELOSP-176045 Check for alertmanager logs"
+      ansible.builtin.shell:
+        cmd: |
+          oc logs alertmanager-default-0 -c alertmanager
+      register: cmd_output
+      retries: 18
+      delay: 10
+      until: "'receiver=email' in cmd_outout.stdout"
       changed_when: false
 
   always: