[wip] Monitoring

I'm adding Cloud Monitoring checks to the site as per #141, but first I'll need to write the Ansible modules to create entities, checks, alerts and so on.

/cc @rgbkrk 
@ycombinator: I just asked @gecampbell about what values we should actually use for this. He said that `sdk-support` should be one (probably for "critical"), but that you might have insight about what the other should be. Any ideas?