[ONOS-6901] Fix how the systemTest does not return any result when it forced to quit the test

Change-Id: If93c48d46e8dc2494046b42de21f732775d7f520
diff --git a/TestON/tests/FUNC/FUNCflow/dependencies/checkingFlow.py b/TestON/tests/FUNC/FUNCflow/dependencies/checkingFlow.py
index 0269f7e..4209947 100644
--- a/TestON/tests/FUNC/FUNCflow/dependencies/checkingFlow.py
+++ b/TestON/tests/FUNC/FUNCflow/dependencies/checkingFlow.py
@@ -22,8 +22,7 @@
             stepResult = main.FALSE
         except ValueError:
             main.log.error( "Problem getting Flows state from REST API.  Exiting test" )
-            main.cleanup()
-            main.exit()
+            main.cleanAndExit()
 
         utilities.assert_equals( expect=main.TRUE,
                                  actual=stepResult,