[ONOS-7074]Investigate the SCPFscaleTopo

scale 40 problem..

Change-Id: Id15d3c29ffe440fd423e0a5f3f09b166ea0a2ec3
diff --git a/TestON/tests/dependencies/utils.py b/TestON/tests/dependencies/utils.py
index 5e15c2a..e1c2027 100644
--- a/TestON/tests/dependencies/utils.py
+++ b/TestON/tests/dependencies/utils.py
@@ -35,7 +35,7 @@
         main.case( "Stop Mininet" )
         main.caseExplanation = "Stopping the current mininet to start up fresh"
 
-    def mininetCleanup( self, Mininet, timeout=5 ):
+    def mininetCleanup( self, Mininet, timeout=5, exitTimeout=1000 ):
         """
         Description:
             Clean up the mininet using stopNet and verify it.
@@ -47,7 +47,7 @@
             else returns main.FALSE
         """
         main.step( "Stopping Mininet" )
-        topoResult = Mininet.stopNet( timeout=timeout )
+        topoResult = Mininet.stopNet( timeout=timeout, exitTimeout=exitTimeout )
         utilities.assert_equals( expect=main.TRUE,
                                  actual=topoResult,
                                  onpass="Successfully stopped mininet",