Added fauxhai, rubocop, knife-spork, and kitchen-vagrant to verify

This will cause verify to fail on Windows, catching https://github.com/opscode/chef-dk/issues/221
Working on a change to omnibus-chef to correct this problem.
cc @btm @opscode/client-engineers 
@kwilczynski I don't think so - it seems to me that he is writing out some ruby code and then running `rubocop` on it to validate that rubocop is installed and working correctly.