pass jenkins build result back to gearman client

This checkin enables jenkins build result to be passed back to the
requesting gearman client.  Although i think gearman-java
fails to return results on a job failure.
https://answers.launchpad.net/gearman-java/+question/221348

Change-Id: Ia35458c23dea2ca04febfb63e933b99f2f0d0cb2
Merge "pass jenkins build result back to gearman client"