Use widely-known osfamily fact to set cfg location
Use widely-known osfamily fact to set cfg location

Ran into an issue on Amazon linux because this module doesn't use the standard osfamily fact to identify RedHat family OSes. It instead explicitly lists three of many that should be compatible based on the configuration path.
maxchk/puppet-varnish,rweich/puppet-varnish,bigon/puppet-varnish,rweich/puppet-varnish,interlegis/puppet-varnish,sanoma-technology/puppet-varnish,carroarmato0/puppet-varnish,joshuaspence/puppet-varnish,voroniys/puppet-varnish,sanoma-technology/puppet-varnish,rdeknijf/puppet-varnish,carroarmato0/puppet-varnish,rdeknijf/puppet-varnish,voroniys/puppet-varnish,interlegis/puppet-varnish,joshuaspence/puppet-varnish,bigon/puppet-varnish,maxchk/puppet-varnish