COMP: Decrease the number of parallel jobs on deathstar-linux.
COMP: Decrease the number of parallel jobs on deathstar-linux.

It is using up too much memory on the CLI builds.

Change-Id: I35ae64066dd61d64cff0154595e34bbbd8676fb2

thewtex/TubeTK-DashboardScripts,KitwareMedical/TubeTK-DashboardScripts