contrib: pylintrc: pull in chromite updates

Turn on a lot of Python 3 & other style improvements we've added to
chromite in recent times.

BUG=chromium:980619
TEST=`cros lint` on files in here isn't too bad, but does catch new things

Change-Id: Ie76a61eb6a55c3721ac544ff361e7c0ecc457c86
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/1742539
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Douglas Anderson <dianders@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
1 file changed