Add travis tests for newer Puppet versions
Add travis tests for newer Puppet versions

dougneal/puppet-varnish,craigwatson/puppet-varnish,BashtonLtd/puppet-varnish,Kaplan-Australia/puppet-varnish,BashtonLtd/puppet-varnish,dougneal/puppet-varnish,Kaplan-Australia/puppet-varnish,craigwatson/puppet-varnish