Add Government department short URL redirects
Add Government department short URL redirects

These used to live in the Whitehall application, which as a Rails app is
more vulnerable to downtime than the front line web servers. Because
these short URLs are used in almost all departmental communication
they're being moved to the frontend router for resilience and
transparency reasons.

Additionally they now have a 1 hour cache expiry time so downstream CDN
providers can serve the redirects straight from the cache.

See the following tickets for more information:

https://www.pivotaltracker.com/story/show/40198391
https://www.pivotaltracker.com/story/show/39938687

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