0fb9c1a98 [lucicfg] Add recipe kwarg to turn on python3 mode.
76addbdc5 [lucicfg] Mark swarming_tags arg as deprecated
e4a84dce9 [lucicfg] remove the deprecated milo bug template API

R=vadimsh

Bug: 942720
Change-Id: I20004c5b0f9af465e3994f02098d6deedc711bf5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3258487Reviewed-by: Vadim Shtayura <vadimsh@chromium.org>
Commit-Queue: Robbie Iannucci <iannucci@chromium.org>