[moblab] Ensure job_aborter is executed at the correct time.

Job aborter needs the autotest setup to be complete and the
database to be active.

Added in standard bootup debugging that helped solve these issues.

BUG=chromium:830765
TEST=built and tested on moblab

Change-Id: I2af817e47c2ea8023c52ea6050ba1c131f6ebf96
Reviewed-on: https://chromium-review.googlesource.com/1055662
Reviewed-by: Keith Haddow <haddowk@chromium.org>
Commit-Queue: Keith Haddow <haddowk@chromium.org>
Tested-by: Keith Haddow <haddowk@chromium.org>