Fix reload service when config updated

service.enabled can be used with watch_in. This patch fixes that
and use service.running.

There is an example of error when applying state:
----------
          ID: opencontrail_compute_services
    Function: service.enabled
        Name: supervisor-vrouter
      Result: False
     Comment: Unable to trigger watch for service.enabled
     Started: 10:40:25.445146
    Duration: 0.785 ms
     Changes:

Change-Id: Id0745ebb3ac08f8bedae3b7d74797831213105ff
1 file changed