[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/FUNCoptical/FUNCoptical.py b/TestON/tests/FUNC/FUNCoptical/FUNCoptical.py
index 12b3c8c..00d5cab 100644
--- a/TestON/tests/FUNC/FUNCoptical/FUNCoptical.py
+++ b/TestON/tests/FUNC/FUNCoptical/FUNCoptical.py
@@ -45,7 +45,7 @@
             main.testSetUp = ONOSSetup()
         except ImportError:
             main.log.error( "ONOSSetup not found. exiting the test" )
-            main.exit()
+            main.cleanAndExit()
         main.testSetUp.envSetupDescription()
         stepResult = main.FALSE
         # Test variables
@@ -101,8 +101,7 @@
                                                    fileName="TopoDDriver.json")
         #Exit if topology did not load properly
         if not topoResult:
-            main.cleanup()
-            main.exit()
+            main.cleanAndExit()
 
         main.caseExplanation = "Start opticalTest.py topology included with ONOS"
         main.step( "Starting mininet and LINC-OE" )
@@ -127,7 +126,7 @@
             from tests.dependencies.utils import Utils
         except ImportError:
             main.log.error( "Utils not found exiting the test" )
-            main.exit()
+            main.cleanAndExit()
         try:
             main.Utils
         except ( NameError, AttributeError ):
@@ -136,8 +135,7 @@
         topoResult = main.Utils.mininetCleanup( main.LincOE, timeout=180 )
         # Exit if topology did not load properly
         if not topoResult:
-            main.cleanup()
-            main.exit()
+            main.cleanAndExit()
 
     def CASE16( self, main ):
         """
@@ -186,7 +184,7 @@
             from tests.dependencies.utils import Utils
         except ImportError:
             main.log.error( "Utils not found exiting the test" )
-            main.exit()
+            main.cleanAndExit()
         try:
             main.Utils
         except ( NameError, AttributeError ):
@@ -241,7 +239,7 @@
             from tests.dependencies.topology import Topology
         except ImportError:
             main.log.error( "Topology not found exiting the test" )
-            main.exit()
+            main.cleanAndExit()
         try:
             main.topoRelated
         except ( NameError, AttributeError ):