* Modernize the kitchen config
This is basically the same one we use in chef/chef
* Modernize the omnibus deps
* Remove cookbook constraints
* Avoid security warnings when bundle installing
* Use the ruby-cleanup project to slim the omnibus package
We're using this in chef and DK to greatly reduce our artifact size. It's just a set of cleanup steps that are the same for all ruby omnibus projects.
Signed-off-by: Tim Smith <tsmith@chef.io>
