Configure release helm job

We might not need the stage helm job, but instead we
need a release helm that calls the publish script.

Re-configure stage helm to perform like a release helm job.
Trigger the job only on "release-helm" comments and prevent
it from triggering after every merge.

Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
Change-Id: I7232f4a8668939e0c24644fe77165d5326d72a7b
2 files changed