Use exitFromCmd when ONOS CLI times out

Change-Id: Iec0c30d3a6fd54c171fbee91b3d0a8d44d5a62f3
diff --git a/TestON/drivers/common/cli/onosclidriver.py b/TestON/drivers/common/cli/onosclidriver.py
index 80e0246..490f584 100755
--- a/TestON/drivers/common/cli/onosclidriver.py
+++ b/TestON/drivers/common/cli/onosclidriver.py
@@ -636,8 +636,7 @@
             main.log.error( self.name + ": ONOS timeout" )
             if debug:
                 main.log.debug( self.handle.before )
-            self.handle.send( "\x03" )
-            self.handle.expect( self.karafPrompt )
+            self.exitFromCmd( self.karafPrompt, 100 )
             return None
         except IndexError:
             main.log.exception( self.name + ": Object not as expected" )