guardian/deploy — pull request #48 by sihil (2012-11-12 20:21:11+00:00)
Title: Should be possible to prevent deploys starting

As riff-raff does more and more deploys there needs to be a way to ensure deployments off riff-raff itself are possible to do safely.

This is the first step to this, providing switches that can be turned off to prevent new deploys being queued. One of the switches can only be turned off when there are no deploys currently running which is designed for building in to the deploy process of Magenta in the future.