[skcms] Run Bazel tryjobs using the VM service account, not JSON keys.

This CL is analogous to https://skia-review.googlesource.com/c/buildbot/+/446297.

I changed the scope of bots skia-e-gce-{500..524} and skia-e-gce-{600..614} to https://www.googleapis.com/auth/cloud-platform in order for this to work.

I obtained the list of affected bots from the following link, which uses the dimensions in the tasks.json file: https://chromium-swarm.appspot.com/botlist?c=id&c=task&c=machine_type&c=os&c=status&d=asc&f=pool%3ASkia&f=os%3AWindows-Server-17763&k=os&s=id.

Change-Id: Ic236a3ab6e6240b1257ccb3c9a20d4ea45bf1cb6
Reviewed-on: https://skia-review.googlesource.com/c/skcms/+/456376
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Leandro Lovisolo <lovisolo@google.com>
2 files changed