[chassis] Fix test_default_route.py for chassis (#7825)

* Fix test_default_route.py - pass argument in get_uplink_ns

Co-authored-by: abdosi <[email protected]>

Author: 2 people

tests/route/test_default_route.py

@@ -58,7 +58,7 @@ def get_upstream_neigh(tb, device_neigh_metadata):
         upstream_neighbors.update({neigh_name: (ipv4_addr, ipv6_addr)})
     return upstream_neighbors
 
-def get_uplink_ns(tbinfo, bgp_name_to_ns_mapping):
+def get_uplink_ns(tbinfo, bgp_name_to_ns_mapping, device_neigh_metadata):
     neigh_type = get_upstream_neigh_type(tbinfo['topo']['type'])
     asics = set()
     for name, asic in bgp_name_to_ns_mapping.items():