[SEBA-939] ATTWorkflowDriver Service Instances status message remains same as ONU not found in whitelist after pushing ONU Whitelist with wrong PON port

Change-Id: I8c76c5861ed10a3b626b24246cfb9384cbf3316d
diff --git a/xos/synchronizer/model_policies/model_policy_att_workflow_driver_whitelistentry.py b/xos/synchronizer/model_policies/model_policy_att_workflow_driver_whitelistentry.py
index 348af76..a9e58e1 100644
--- a/xos/synchronizer/model_policies/model_policy_att_workflow_driver_whitelistentry.py
+++ b/xos/synchronizer/model_policies/model_policy_att_workflow_driver_whitelistentry.py
@@ -1,4 +1,3 @@
-
 # Copyright 2017-present Open Networking Foundation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -43,6 +42,8 @@
             si=si,
             onu_state=si.admin_onu_state,
             authentication_state=si.authentication_state)
+
+        si.status_message = message
         si.save_changed_fields(always_update_timestamp=True)
 
     def handle_update(self, whitelist):