service.is_running

Update is_running to actual return whether or not a service is running.
The status command succeedes no matter if the service is running or not.
This has is_running check for the presence of 'running' in the output of
`service <service> status`.


service.is_running currently just checks to see whether the call to `service <service> status` succeeds. This is not enough to determine whether the service is running or not.