add metadata.rb files

Summary: Fixes T1767: add metadata.rb files

Test Plan: try it make sure it doesn't break anything with the existing. And then also try to upgrade to chef 11.10 and see if it still fails on dependency errors.

Reviewers: #everyone, gwarner

Reviewed By: #everyone, gwarner

Maniphest Tasks: T1767

Differential Revision: https://dev.blendtec.com/D1158