This cookbook needed to be brought up to the standard of the other
cookbooks in the repo.
* Adding .gitreview
* Normalizing .rubocop.yml
* Normalizing Gemfile
* Normalizing metadata.rb
* Normalizing .gitignore
* Adding specs/ directory and spec_helper.rb
* Fixed all rubocop errors
Change-Id: Ica7c525aae5fbd5c441ce50cff36046c678046d6
Partial-Bug: 1348243