Import rightscale/rightscale_cookbooks version 9b6855d69fb0847e925c4747129c552c8c7971d8
Do not send empty runlist if roles were not specified
Use the client.rb file info to drive the knife config for unregister
Add default knife.rb
Add logic to carry deployement, environment, role, and datacenter into the chef-client run
Add datacenter as attribute to template
Specify datacenter via RS attributes
Update metadata.json to include new datacenter attribute