Add job to automatically deliver stories
Add job to automatically deliver stories

- The `deliver-stories` job will deliver any stories assoicated with
commits tagged `[finishes #<STORY_NUMBER>] in the networking: cf-diego
tracker project

cloudfoundry-incubator/cf-networking-release,cloudfoundry-incubator/cf-networking-release,cloudfoundry-incubator/cf-networking-release,cloudfoundry-incubator/cf-networking-release