Add Ruby 2.2.1 to all CI servers.
Add Ruby 2.2.1 to all CI servers.

alphagov/ci-puppet,alphagov/ci-puppet,alphagov/ci-puppet,boffbowsh/ci-puppet,boffbowsh/ci-puppet,boffbowsh/ci-puppet,boffbowsh/ci-puppet,alphagov/ci-puppet