OpenRC service command should accept "one" prefix

[asomers]

On FreeBSD, scripts can run service foo onestatus to check if a service is running, whether or not it's enabled. On TrueOS that command fails, because service(8) doesn't recognize "onestatus". It only recognizes "status". For compatibility, it should treat "onestatus" the same as "status". It should probably do the same with other commands, too.