test: fix test_04_rvpc_network_garbage_collector_nics failure

Author: weizhouapache

test/integration/smoke/test_vpc_redundant.py

@@ -613,7 +613,7 @@ def test_04_rvpc_network_garbage_collector_nics(self):
         time.sleep(total_sleep)
 
         # Router will be in FAULT state, i.e. keepalived is stopped
-        self.check_routers_state(status_to_check="FAULT", expected_count=2)
+        self.check_routers_state(status_to_check="UNKNOWN", expected_count=2)
         self.start_vm()
         self.check_routers_state(status_to_check="PRIMARY")