PRESUBMIT.cfg: run presubmit.py checks more cleanly.

Run the presubmit checks the same way that `git cl presubmit` does.

BUG=chromium:1149626
TEST=manual

Change-Id: I0583ce907c846ecdd1c74f7d20e4139ca90b8cde
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2544918
Auto-Submit: LaMont Jones <lamontjones@chromium.org>
Commit-Queue: Sean McAllister <smcallis@google.com>
Reviewed-by: Sean McAllister <smcallis@google.com>
1 file changed