SEBA-360 Pass logger to AttHelper rather than reinitialize

Change-Id: I41c0c1b75ba1c28b69a162b498ced039650db762
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 cb1e20d..51f2ba4 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
@@ -31,7 +31,7 @@
         self.handle_update(whitelist)
 
     def validate_onu_state(self, si):
-        [valid, message] = AttHelpers.validate_onu(si)
+        [valid, message] = AttHelpers.validate_onu(self.logger, si)
         si.status_message = message
         if valid:
             si.onu_state = "ENABLED"