tree c80df8d95660c6891e21a9799a8f3ab0b518f33b
parent c638ddcedc6405e5307cceee700dc458dc0d9a77
author Robert Kolchmeyer <rkolchmeyer@google.com> 1597632983 -0700
committer Robert Kolchmeyer <rkolchmeyer@google.com> 1598563233 -0700

Update COS license regex

- Allow things like '#!/usr/bin/python'
- Allow 'https', and 4 spaces before the license URL (as per
  go/releasing/preparing)

Other changes:
- Don't license check README files
- Allow projects to override COS license check settings
- Expect first-party repos to have a PRESUBMIT.cfg that explicitly sets
  the correct license check settings

BUG=None
TEST=`repo upload` on some changes

Change-Id: I1edd8633be34dc676776e720868bc2c006e1629c