pre-upload_unittest: handle newer test api

The chromite main func updated its api to need the caller pass in its
module name explicitly.

BUG=chromium:219660
TEST=`./pre-upload_unittest.py` still passes

Change-Id: I2abf980896b07b88a941ba427a3d4e7151f364e2
Reviewed-on: https://chromium-review.googlesource.com/271644
Reviewed-by: Dan Erat <derat@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
1 file changed