chromeos-machine-id-regen: Fix start dependency.

"start on starting system-services" should be reserved for jobs for
which failure would be considered a system failure. Jobs
inappropriately using "starting system services" impact our
provisioning flow.

BUG=chromium:765686
TEST=None

Change-Id: Ic2e7633d153a2cefc7eb11e092317ae6d9f951db
Reviewed-on: https://chromium-review.googlesource.com/752024
Commit-Ready: Justin TerAvest <teravest@chromium.org>
Tested-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
2 files changed