It's a bit confusing to have this config in this module, since we only want to log the file transfers made by agency users and not anything related to our CDN logs, which this module otherwise handles. Does this need to be in `cdn_logs`, or could it be in the [`transition_logs` manifest](https://github.com/alphagov/ci-puppet/blob/master/modules/ci_environment/manifests/transition_logs.pp) which handles the rest of the agency user setup?