[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/SCPFcbench/SCPFcbench.py b/TestON/tests/SCPF/SCPFcbench/SCPFcbench.py
index d87bc7e..0bafefb 100644
--- a/TestON/tests/SCPF/SCPFcbench/SCPFcbench.py
+++ b/TestON/tests/SCPF/SCPFcbench/SCPFcbench.py
@@ -35,7 +35,7 @@
                 main.testSetUp = ONOSSetup()
             except ImportError:
                 main.log.error( "ONOSSetup not found. exiting the test" )
-                main.exit()
+                main.cleanAndExit()
             main.testSetUp.envSetupDescription()
             stepResult = main.FALSE
             try: