[vstest]: Potential fix for timing issue in warm_reboot's routing UT (sonic-net#788)

Author: rodnymolina

tests/test_warm_reboot.py

@@ -967,16 +967,15 @@ def enable_warmrestart(dvs, db, app_name):
 #
 ################################################################################
 
-# TODO: Please fix this test case. Here temporarily skip to unblock other pull requests
-@pytest.mark.skip(reason="Suspected unstable test code")
+
 def test_routing_WarmRestart(dvs, testlog):
 
     appl_db = swsscommon.DBConnector(swsscommon.APPL_DB, dvs.redis_sock, 0)
     conf_db = swsscommon.DBConnector(swsscommon.CONFIG_DB, dvs.redis_sock, 0)
     state_db = swsscommon.DBConnector(swsscommon.STATE_DB, dvs.redis_sock, 0)
 
     # Restart-timer to utilize during the following testcases
-    restart_timer = 10
+    restart_timer = 15
 
 
     #############################################################################