Use exitFromCmd when ONOS CLI times out

Change-Id: I824d455eb01e4cb595f12ffed7ee81aa9084592e
diff --git a/TestON/drivers/common/cli/onosclidriver.py b/TestON/drivers/common/cli/onosclidriver.py
index 54db7e4..11389ca 100755
--- a/TestON/drivers/common/cli/onosclidriver.py
+++ b/TestON/drivers/common/cli/onosclidriver.py
@@ -589,8 +589,7 @@
             main.log.error( self.name + ": ONOS timeout" )
             if debug:
                 main.log.debug( self.handle.before )
-            self.handle.send( "\x03" )
-            self.handle.expect( "onos>" )
+            self.exitFromCmd( self.karafPrompt, 100 )
             return None
         except IndexError:
             main.log.exception( self.name + ": Object not as expected" )