Add govuk-cdn-config to CI
Add govuk-cdn-config to CI

I'm adding tests for this project.

https://trello.com/c/y6MIgxjp

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet