Add the ability to configure additional refs to checkout

This is needed for the hackathon bot, which uses an experimental,
non origin/master ref.

# Skipping Build Recipes Tester, see CL for why.
NOTRY=True

Bug: 912697
Change-Id: I3e1af5166db622d38404f8bd3e8e755abd4d877f
Reviewed-on: https://chromium-review.googlesource.com/c/1370864
Commit-Queue: Stephen Martinis <martiniss@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Reviewed-by: Vadim Shtayura <vadimsh@chromium.org>
Reviewed-by: Ryan Tseng <hinoka@chromium.org>
3 files changed
tree: 4e559ebe5a6a1a52843e0bef893a68cdc79f5275
  1. infra/
  2. masters/
  3. scripts/
  4. site_config/
  5. slave/
  6. tests/
  7. third_party/
  8. .gitattributes
  9. .gitignore
  10. .vpython
  11. codereview.settings
  12. DEPS
  13. environment.cfg.py
  14. LICENSE
  15. OWNERS
  16. PRESUBMIT.py
  17. README.md
  18. WATCHLISTS
README.md

build

Hi build contributor! If you do any change in scripts/master/ or touching any master's html/ directories, you must restart master.chromium.fyi first and ensure that it still works before restarting other masters.

Recipes

If you're here to make a change to ‘recipes’ (the code located in scripts/slave/recipes*), please take a look at the README for more information pertaining to recipes.