enabling parallel builds for ovirt-engine upgrade jobs

hey, i think we can enable parallel builds also to the setup/upgrade jobs [1], same way we did for standard ci [2]. any thoughts/objections? [1] http://jenkins.ovirt.org/job/ovirt-engine_master_upgrade-from-3.6_el7_merged... [2] https://gerrit.ovirt.org/#/c/48760/ -- Eyal Edri Supervisor, RHEV CI EMEA ENG Virtualization R&D Red Hat Israel phone: +972-9-7692018 irc: eedri (on #tlv #rhev-dev #rhev-integ)