Squashed 'saltstack/salt-formulas/varnish-saltstack-formula/' content from commit 1f3be09

git-subtree-dir: saltstack/salt-formulas/varnish-saltstack-formula
git-subtree-split: 1f3be096185e8b9a5327da5fb9d3d2bc8c71caa3
Merge commit 'b118a7ebb02153d8153a618b87f5720716d85e30' as 'saltstack/salt-formulas/varnish-saltstack-formula'
Added varnish-saltstack-formula as remote/subtree
Changed file_roots

Now we just use the *-saltstack-formula versions of the formula (the
non-official ones).
Added support for package version
Added support for package version
Added support for package versions
Added support for package versions
Added support for package versions
Added support for package versions
Fixed map.jinja syntax
Clean-up of map.jinja for server/agent/frontend