versions.deis.com CI updates story

[jackfrancis]

As a versions.deis.com user I expect current version information matching current builds to be present in the data that the API represents in order to get correct, up-to-date version info for all deis components.

We should include in the standard CI build processes a POST to versions.deis.com of the CI-built component version.

[arschles]

#79 added docs describing how to manually add new versions to the workflow-manager-api, and this issue seems to be requesting that the process be automated. Since we don't have fully automated releases right now, perhaps it's a good idea to add the functionality described in #79 to deisrel.

Regardless, moving out of RC1 and into v2 until we make a decision here.