Add Govuk-mongo Repo For Mongo Upgrade
Add Govuk-mongo Repo For Mongo Upgrade

We are upgrading MongoDB to version 2.6. We need to create
a new aptly repo for this.

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