[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/SCPF/SCPFswitchLat/dependencies/switchFunc.py b/TestON/tests/SCPF/SCPFswitchLat/dependencies/switchFunc.py
index b81a674..cde275e 100644
--- a/TestON/tests/SCPF/SCPFswitchLat/dependencies/switchFunc.py
+++ b/TestON/tests/SCPF/SCPFswitchLat/dependencies/switchFunc.py
@@ -139,8 +139,7 @@
     # if there are too many wrongs in this test, then exit
     if main.wrong['totalWrong'] > main.maxWrong:
         main.log.error( "The total wrong number exceeds %d, test terminated" % main.maxWrong )
-        main.cleanup()
-        main.exit()
+        main.cleanAndExit()
 
 def captureOfPack( main, deviceName, ofPack, switchStatus, resultDict, warmup ):
     '''