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/+log/a9d52afdf4c5b9641602e6a8d96fdd2c40010062~..14aeb4fc9d57d144be6ba3cc8b6b948fa5d74e6e
  a9d52af (yiwzhang@google.com)
      py3: add .vpython3 to .gitattributes so that it will be bundled
  14aeb4f (yiwzhang@google.com)
      py3: use zlib module to compress the build proto stream

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

R=iannucci@chromium.org

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: Id4d949bf030d00ea52290b6f0bf529cd9d6ccce3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3054978
Commit-Queue: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>