[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/drivers/common/cli/emulator/lincoemininetdriver.py b/TestON/drivers/common/cli/emulator/lincoemininetdriver.py
index 2b3b721..bfa466f 100644
--- a/TestON/drivers/common/cli/emulator/lincoemininetdriver.py
+++ b/TestON/drivers/common/cli/emulator/lincoemininetdriver.py
@@ -86,7 +86,7 @@
             return main.FALSE
         except Exception:
             main.log.exception(self.name + ": Uncaught exception!")
-            main.cleanup()
+            main.cleanAndExit()
             return main.FALSE
 
     def pingHostOptical( self, **pingParams ):
@@ -118,12 +118,10 @@
         except pexpect.EOF:
             main.log.error( self.name + ": EOF exception found" )
             main.log.error( self.name + ":     " + self.handle.before )
-            main.cleanup()
-            main.exit()
+            main.cleanAndExit()
         except Exception:
             main.log.exception(self.name + ": Uncaught exception!")
-            main.cleanup()
-            main.exit()
+            main.cleanAndExit()
         main.log.info( self.name + ": Ping Response: " + response )
         if re.search( ',\s0\%\spacket\sloss', response ):
             main.log.info( self.name + ": no packets lost, host is reachable" )