[SEBA-311] Disabling ONU device when an entry is removed from the whitelist

Change-Id: I81dde41f1970bfb242841aae63eb78beceade73c
diff --git a/xos/synchronizer/model_policies/model_policy_att_workflow_driver_serviceinstance.py b/xos/synchronizer/model_policies/model_policy_att_workflow_driver_serviceinstance.py
index 3fb05dd..525d6ce 100644
--- a/xos/synchronizer/model_policies/model_policy_att_workflow_driver_serviceinstance.py
+++ b/xos/synchronizer/model_policies/model_policy_att_workflow_driver_serviceinstance.py
@@ -45,8 +45,9 @@
             # if it's disabled it means someone has disabled it
             self.validate_onu_state(si)
         else:
-            # just clean the status
+            # clean the status and verify that the ONU is actually disabled
             si.status_message = "ONU has been disabled"
+            self.update_onu(si.serial_number, "DISABLED")
 
         # handling the subscriber status
         subscriber = self.get_subscriber(si.serial_number)