ST: Route Table routes need to be set properly when update happened

Change-Id: Ia9c33706eef48d09424f2c9042165bd4c38a5f88
Closes-Bug: #1548893

src/config/schema-transformer/config_db.py

@@ -1571,6 +1571,7 @@ def __init__(self, name, obj=None):
 
     def update(self, obj=None):
         self.obj = obj or self.read_vnc_obj(fq_name=self.name)
+        self.routes = []
         routes = self.obj.get_routes()
         if routes:
             self.routes = routes.get_route() or []

src/config/schema-transformer/test/test_service.py

@@ -1366,7 +1366,6 @@ def _match_route_table(vn, prefix, next_hop, should_present=True):
         rt.set_routes(routes)
         self._vnc_lib.route_table_update(rt)
 
-        gevent.sleep(10)
         _match_route_table(vn1, "2.2.2.2/0", "20.20.20.20", False)
         _match_route_table(vn2, "2.2.2.2/0", "20.20.20.20", False)
 
@@ -1383,6 +1382,12 @@ def _match_route_table_cleanup(vn):
         _match_route_table(vn1, "1.1.1.1/0", "10.10.10.10")
         _match_route_table_cleanup(vn2)
 
+        # delete first route and check vn ri sr entries
+        rt.set_routes(None)
+        self._vnc_lib.route_table_update(rt)
+
+        _match_route_table(vn1, "1.1.1.1/0", "10.10.10.10", False)
+
         vn1.del_route_table(rt)
         self._vnc_lib.virtual_network_update(vn1)
         _match_route_table_cleanup(vn1)