Update Rakefile to match changes from CHEF-257, and add optional site- prefix for new_cookbook
Update Rakefile to match changes from CHEF-257, and add optional site- prefix for new_cookbook

tas50/rundeck,level11-cookbooks/rundeck,marthag8/rundeck,bhalothia/rundeck,tas50/rundeck,scottymarshall/rundeck,ephemeral972/rundeck,level11-cookbooks/rundeck,scottymarshall/rundeck,level11-cookbooks/rundeck,bhalothia/rundeck,ephemeral972/rundeck,scottymarshall/rundeck,ephemeral972/rundeck,tas50/rundeck,marthag8/rundeck,bhalothia/rundeck,marthag8/rundeck