Fixes host entries - s/,/\ /g
caching virt-what and pkgconfig for kickstand
Fix public folder

- set :public_folder, Proc.new{ File.join(root, "public") }
    - that's the correct way to specify public
    - however, the default is public and that works.
- kickstand wouldn't work with:
    - set :public_folder, 'public'