[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/FUNCipv6Intent/dependencies/FUNCIpv6IntentFunction.py b/TestON/tests/FUNC/FUNCipv6Intent/dependencies/FUNCIpv6IntentFunction.py
index 6bd4c6c..d4594aa 100644
--- a/TestON/tests/FUNC/FUNCipv6Intent/dependencies/FUNCIpv6IntentFunction.py
+++ b/TestON/tests/FUNC/FUNCipv6Intent/dependencies/FUNCIpv6IntentFunction.py
@@ -2008,8 +2008,8 @@
         return main.FALSE
     except Exception:
         main.log.exception( self.name + ": Uncaught exception!" )
-        main.cleanup()
-        main.exit()
+        main.cleanAndExit()
+
     main.log.info( "Checking Intent Paritions for Change in Leadership" )
     mismatch = False
     for dict1 in leaders1: