tree d974e11f49b7af8485e631381b7313422dba45e4
parent 8a7bb40aea7a86b6d14242115cba9334c6edf0da
author Daniel Wang <wonderfly@google.com> 1503520981 -0700
committer chrome-bot <chrome-bot@chromium.org> 1503612905 -0700

gce_au_worker: Shard tests across zones to prevent from zonal outages

If for some reason an instance cannot be created in a particular zone,
try other zones (currently all in the same region) until we succeed.

BUG=b:64934461
TEST=trybot against lakitu-pre-cq

Change-Id: I6d1a3b300ae8c9c4c5ddd8171c494ecc587010b6
Reviewed-on: https://chromium-review.googlesource.com/630018
Commit-Ready: Daniel Wang <wonderfly@google.com>
Tested-by: Daniel Wang <wonderfly@google.com>
Reviewed-by: Prathmesh Prabhu <pprabhu@chromium.org>