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/+/b64b15afdf9f3fe3b6bf8e662c4795b9c0e902e1
  b64b15a (iannucci@chromium.org)
      [python3] Add test and fix syntax+warnings for py3.

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: Ibda2918e076d774608ec0b49f15beaefb7827b12
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2880846
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>