Revert "[swarming] Use go client to collect task"

This reverts commit d0a3d72947784d80c6522f9dd1fe8fc109fda5ba.

Reason for revert: All V8 is purple, e.g.:
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux/28912

Original change's description:
> [swarming] Use go client to collect task
> 
> This replaces swarming-py to luci-go client.
> * Change some flag names
> * Change the way to handle summary json in collect_task.py
> 
> This is tested on
> $ led get-builder luci.chromium.try:win7_chromium_rel_ng | led edit-recipe-bundle | led edit-cr-cl https://chromium-review.googlesource.com/c/chromium/src/+/1363730 | led lunch
> * https://chromium-swarm.appspot.com/task?id=419859da9066ec10 and
> * https://chromium-swarm.appspot.com/task?id=419859fce0922510
> 
> Recipe-Nontrivial-Roll: build_limited_scripts_slave
> Bug: 868878, 894045
> Change-Id: I06273a9be7e9ec9c058bcf4bdb259ac5d7c60d3b
> Reviewed-on: https://chromium-review.googlesource.com/c/1333174
> Reviewed-by: Marc-Antoine Ruel <maruel@chromium.org>
> Commit-Queue: Takuto Ikuta <tikuta@chromium.org>

TBR=maruel@chromium.org,vadimsh@chromium.org,tikuta@chromium.org

Change-Id: I78026a62d8c3169af42e1c60a1411e4034754171
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 868878, 894045
Reviewed-on: https://chromium-review.googlesource.com/c/1365330
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
251 files changed
tree: 876cabcc309107524ffa387790b863c6b3766536
  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.