WIP: Deployment Triggers POC

Making a PR for this to make tracking comments easier.
By the time you guys merge it'll be in master - may just want to beat the rush.

----- Original Message -----
> > @@ -65,10 +65,12 @@ type ImageRepositoryMappingInterface interface {
> >  // DeploymentConfigInterface contains methods for working with
> >  DeploymentConfigs
> >  type DeploymentConfigInterface interface {
> 
> Agree, but this should happen first in master and then we'll rebase onto it.
> 
> ---
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> https://github.com/openshift/origin/pull/133/files#r18553271