Add two secs timeout

Two sec timeout so there is enough time to check if there any message to read.
It was 0, too short for us to read the message.

rbac/management/principal/cleaner.py

@@ -177,7 +177,7 @@ def clean_principals_via_umb():
     logger.info("clean_tenant_principals: Start principal clean up.")
     UMB_CLIENT.connect()
     UMB_CLIENT.subscribe(QUEUE, {StompSpec.ACK_HEADER: StompSpec.ACK_CLIENT_INDIVIDUAL})
-    while UMB_CLIENT.canRead(0):  # Check if queue is empty
+    while UMB_CLIENT.canRead(2):  # Check if queue is empty, two sec timeout
         frame = UMB_CLIENT.receiveFrame()
         data_dict = xmltodict.parse(frame.body)
         is_deactivate = is_umb_deactivate_msg(data_dict)
@@ -186,6 +186,8 @@ def clean_principals_via_umb():
             UMB_CLIENT.ack(frame)
             continue
         principal_name, groups = clean_principal_umb(data_dict)
+        if not groups:
+            logger.info(f"Principal {principal_name} was not under any groups.")
         for tenant, group_names in groups.items():
             logger.info(f"Principal {principal_name} was under tenant {tenant} in groups: {group_names}")
         UMB_CLIENT.ack(frame)  # This will remove the message from the queue