This'll allow to query gerrit from recipes for e.g. current changes in
CQ.
Bug: 685318
Change-Id: I73d08d4b186b2e5fe044fd4d4fafd9db62e27066
Reviewed-on: https://chromium-review.googlesource.com/558939
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
Reviewed-by: Aaron Gable <agable@chromium.org>