Fixing TOSCA_key for OLT_Device

Change-Id: I9a60c0110f8c5c86d7e19fc1ff6b9d5ca0cc99bd
diff --git a/xos/synchronizer/steps/sync_olt_device.py b/xos/synchronizer/steps/sync_olt_device.py
index 29722f9..97e90a2 100644
--- a/xos/synchronizer/steps/sync_olt_device.py
+++ b/xos/synchronizer/steps/sync_olt_device.py
@@ -165,6 +165,7 @@
         else:
             log.info("OLT device already exists in VOLTHA", object=str(model), **model.tologdict())
 
+        # TODO configure onos only if we have: Switch datapath id, Switch port, Uplink
         self.configure_onos(model)
 
     def delete_record(self, model):