Add sentry builder config

BUG=chrome-os-partner:48942
TEST=None

Change-Id: Ic85ab4af5f4f5437ec1c064dd218e4db326a123b
Reviewed-on: https://chromium-review.googlesource.com/321101
Commit-Ready: Kaiwen Gu <kaiwengu@chromium.org>
Tested-by: Kaiwen Gu <kaiwengu@chromium.org>
Reviewed-by: Kaiwen Gu <kaiwengu@chromium.org>
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
2 files changed