Document Vagrant 1.8.x hostname provisioning solution
Document Vagrant 1.8.x hostname provisioning solution

This is a temporary fix to an issue that appears when using Vagrant
1.8.x.

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