GitLab

Move test parameters from script arguments to json file.

The tryjob fuchsia-fyi-arm64-rel build failure is expected.  It does
not affect CQ or CI.

Bug: 1126177
Change-Id: I3b2c3458afcf9b1b2614b0d5fa7d3653c0e5c232
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2617052
Commit-Queue: Stephen Roe <steveroe@google.com>
Reviewed-by: Kevin Marshall <kmarshall@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843620}