return group with asn info

inventory_provider/routes/classifier.py

@@ -281,7 +281,13 @@ def _asn_group_info(redis, address):
     return {
         'asn': peer_asn,
         'peers': [
-            {'router': p['hostname'], 'address': p['address']}
+            {
+                'router': p['hostname'],
+                'address': p['address'],
+                # for future use (in case isolation
+                # should be computed per peering type)
+                'group': p['group']
+            }
             for p in peerings_this_asn
         ]
     }