Migrate to gerrit-maven-stage (OPTF)

Migrate to use gerrit-maven-stage from
global-jjb to allow the generation of
signed release artifacts that will reduce
release processing time.

Change-Id: I44cc8a98298fa0747589d3216b4a9351edbf1fba
Issue-ID: CIMAN-234
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
3 files changed