Set the pools for the M83 buckets.

Bug: 1067999
Change-Id: I4c959c9139df0688ab057c6f2934fa93ae1963b4
No-Try: True
TBR: agable@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2137508
Auto-Submit: Garrett Beaty <gbeaty@chromium.org>
Reviewed-by: Garrett Beaty <gbeaty@chromium.org>
Commit-Queue: Garrett Beaty <gbeaty@chromium.org>
Cr-Commit-Position: refs/heads/master@{#756744}

infra/config/versioned/milestones/m83/buckets/ci.star

-load('//lib/builders.star', 'builder_name', 'cpu', 'goma', 'os')
+load('//lib/builders.star', 'builder_name', 'cpu', 'defaults', 'goma', 'os')
 load('//lib/ci.star', 'ci')
 # Load this using relative path so that the load statement doesn't
 # need to be changed when making a new milestone
 load('../vars.star', 'vars')
 
+defaults.pool.set('luci.chromium.ci')
+
 luci.bucket(
     name = vars.ci_bucket,
     acls = [

infra/config/versioned/milestones/m83/buckets/try.star

-load('//lib/builders.star', 'cpu', 'goma', 'os')
+load('//lib/builders.star', 'cpu', 'defaults', 'goma', 'os')
 load('//lib/try.star', 'try_')
 # Load this using relative path so that the load statement doesn't
 # need to be changed when making a new milestone
 load('../vars.star', 'vars')
 
+defaults.pool.set('lui.chromium.try-m83')
+
 luci.bucket(
     name = vars.try_bucket,
     acls = [