pre-upload: Add AOSP license check.

The Apache2 license header used in AOSP can be enabled adding a
PRESUBMIT.cfg file with the following contents:

[Hook Overrides]
cros_license_check: false
aosp_license_check: true

BUG=None
TEST=Tested commits on update_engine repo.

Change-Id: Ida6ed02904517a45c728d3eb96d1d7d440dee7e5
Reviewed-on: https://chromium-review.googlesource.com/295454
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Alex Deymo <deymo@chromium.org>
Trybot-Ready: Alex Deymo <deymo@chromium.org>
Tested-by: Alex Deymo <deymo@chromium.org>
2 files changed