[autotest] fix unittests broken by parentid change

Fix unittests by adding parent_job_id=None as expected argument to
afe.create_job.

Note, at present we don't have a unittest of the intended
parent_job_id functionality.

BUG=chromium-os:39131
TEST=utils/unittest_suite.py now passes.

Change-Id: Ia6e0394c81b034a3d977496ef5870125824538ce
Reviewed-on: https://gerrit.chromium.org/gerrit/43794
Reviewed-by: Alex Miller <milleral@chromium.org>
Commit-Queue: Aviv Keshet <akeshet@chromium.org>
Tested-by: Aviv Keshet <akeshet@chromium.org>
2 files changed