addons: bridge: fix 'query' handler to check if the interface is a bridge

Ticket: CM-7840
Reviewed By: julien, nikhil
Testing Done: Tested ifquery with and without --with-defaults option

addons/bridge.py

@@ -1694,6 +1694,8 @@ class bridge(moduleBase):
 
     def _query(self, ifaceobj, **kwargs):
         """ add default policy attributes supported by the module """
+        if not (ifaceobj.link_kind & ifaceLinkKind.BRIDGE):
+            return
         if self.default_stp_on:
             ifaceobj.update_config('bridge-stp', 'yes')