Migrate Fuchsia sdk checkout from using script to CIPD Bug: fuchsia:99205 Change-Id: I37157852864c35724ee57f59cb6f003e158a6229 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3627125 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>