Declare cookbook dependencies for Chef 11

This appears to be necessary for attributes, libraries etc. to be loaded
in the correct order in Chef 11.

See
http://docs.opscode.com/breaking_changes_chef_11.html#non-recipe-file-evaluation-includes-dependencies
Don't ignore config directory, just any yml files it contains
Merge branch 'metadata-dependencies' of git://github.com/hiremaga/lobot into hiremaga-metadata-dependencies
Merge branch 'master' of github.com:pivotal/lobot