Add RH-family support

This PR consists of two commits but the first has already featured a previous PR and when that is merged, then this one will only amount to the second commit.
Adding the line introduced a problem that didn't exist before. I'm not sure why you are arguing or bashing the quality of the cookbook.  I'm simply asking you to add one line of code here so that it works in both distros:  `supports 'debian'`