Add switch between /etc/varnish/varnish.vcl and /etc/default/varnish to support Ubuntu/Debian.
Add switch between /etc/varnish/varnish.vcl and /etc/default/varnish to support Ubuntu/Debian.
Add scope to $::operatingsystem.
Merge pull request #4 from jeroenmoors/master

Add support for Debian/Ubuntu