Call set_static_route_entries to update static routes

A call to set_static_route_entries was missing before updating the routing
instance when global ASN changes. This causes the static routes to remain
unchanged.

Change-Id: I412d3503aa32c283486c24087da13ac76d4334e2
Closes-Bug: 1565142
(cherry picked from commit 79c16a8)

src/config/schema-transformer/to_bgp.py

@@ -324,6 +324,7 @@ def update_autonomous_system(cls, new_asn):
                     if old_rtgt_name in static_route.route_target:
                         static_route.route_target.remove(old_rtgt_name)
                         static_route.route_target.append(new_rtgt_name)
+                left_ri.obj.set_static_route_entries(static_route_entries)
                 _vnc_lib.routing_instance_update(left_ri.obj)
             try:
                 RouteTargetST.delete(old_rtgt_obj.get_fq_name()[0])