allow chromiumos-staging-bot access on refs/heads/staging

BUG=chromium:1152310

Change-Id: I1616abb5fb5ca136352eabd6e34c2d82cfa5ff99
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/+/2871053
Tested-by: LaMont Jones <lamontjones@chromium.org>
Reviewed-by: Jason Clinton <jclinton@chromium.org>
1 file changed
tree: efb870d527908a4973ecfe90ea645b83b2db6ae8
  1. groups
  2. project.config