This is an automated CL created by the recipe roller. This CL rolls
recipe changes from upstream projects (recipe_engine) into this repository.

recipe_engine:
https://chromium.googlesource.com/infra/luci/recipes-py.git/+/c2aff19048e1fdbf4a421ce9da1007c05f84a665
  c2aff19 (gbeaty@chromium.org)
      Preserve the commit list state in case a candidate is rejected.

More info is at https://goo.gl/zkKdpD. Use https://goo.gl/noib3a to file a bug.

TBR=iannucci@chromium.org

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I26b2a4601f304199cd53b902b71bc18a357207c3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2668980Reviewed-by: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>