More rigerously manage the govuk_env_sync conf directory
More rigerously manage the govuk_env_sync conf directory

Purge files not managed by govuk_puppet, as this directory is fully
managed.

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