Misc cleanup, renaming

netbox/virtualization/models.py

@@ -475,6 +475,10 @@ class VMInterface(BaseInterface):
             object_data=serialize_object(self)
         )
 
+    @property
+    def parent(self):
+        return self.virtual_machine
+
     @property
     def count_ipaddresses(self):
         return self.ip_addresses.count()