Upgrade/Update rubocop

Now that almost all of the rubocop blueprints have been completed, make
one final pass through all of the cookbooks ensuring they're all in
sync with each other.

- Upgrade rubocop to 0.18.1
- Fix violations caused by 0.18.1 upgrade
- Add Includes for non-existent folders to Includes so they
  automatically cover future additions

Change-Id: I9224b785f50103d348e3b16ea24e5dc8cab84c62
Implements: blueprint lint-and-unit-testing-for-havana
Merge "Upgrade/Update rubocop"