Fixing PONPort modeling

Change-Id: I9875f11fa9496fec4e749c09e18d20df9683c770
diff --git a/xos/synchronizer/model_policies/model_policy_voltserviceinstance.py b/xos/synchronizer/model_policies/model_policy_voltserviceinstance.py
index 0756b45..dc457b1 100644
--- a/xos/synchronizer/model_policies/model_policy_voltserviceinstance.py
+++ b/xos/synchronizer/model_policies/model_policy_voltserviceinstance.py
@@ -54,7 +54,7 @@
 
         # Already has a chain
         if len(chain) > 0 and not si.is_new:
-            self.logger.debug("MODEL_POLICY: Subscriber %s is already part of a chain" % si.id)
+            self.logger.debug("MODEL_POLICY: VOLTServiceInstance %s is already part of a chain" % si.id)
             return
 
         # if it does not have a chain,