New methods test if the standard 'run' file in the services folder has
the executable bit set. When the 'run' file is not executable, runit
will not launch the service on boot. This mimicks the enabled/diabled
behavior of other service providers.
The file permissions are set to 700 and 600 for enabled and disabled
states. Because of the ad-hoc nature that runit service files can
sometimes posess, the run files may have passwords or other sensitive
information. Therefore, the permissions are hard coded to only be
readable by the file owner, who is also the user who runs the process.
This brings the runit module more inline with other service providers
so when it is used in a state (with provider: runit) more options can
be used, like enabled: True
