Ensure hosts files are purged DNS entries
Ensure hosts files are purged DNS entries

The pre-migration entries can be removed. First we should ensure their
absense, and then we should remove the hieradata.

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