Merge "create_object should not add an ID if not present in the DB model"

neutron/db/api.py

@@ -105,7 +105,7 @@ def get_objects(context, model, **kwargs):
 
 def create_object(context, model, values):
     with context.session.begin(subtransactions=True):
-        if 'id' not in values:
+        if 'id' not in values and hasattr(model, 'id'):
             values['id'] = uuidutils.generate_uuid()
         db_obj = model(**values)
         context.session.add(db_obj)