Community cookbook refactor and RHEL/CentOS support

I know there were discussions to not have Supermarket cookbook rely on Supermarket but I thought it would be a good idea to use the community cookbooks to deploy Supermarket and set the dependencies to pull directly from Github master for now. 

The intention here was to enable internal behind firewall deploys of Supermarket on RHEL/CentOS. Using community cookbooks seemed the most direct way to do that.