Fix Licensify in Staging
Fix Licensify in Staging

Since we made Licensify use the Puppetmaster in Carrenza, Licensify now
responds on `licensify.staging.publishing.service.gov.uk` in Staging.

This change will fix Licensify in Staging and prevent the
`/apply-for-a-licence` route from erroring.

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