Limit to the platform we currently build these packages for: trusty
Limit to the platform we currently build these packages for: trusty

This stops our Xenial and Precise machines from having apt issues
and broken puppet runs

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