[task-driver-server] Update creation script to align with workload identity
[task-driver-server] Update creation script to align with workload identity

Change-Id: I79dfd636555fe3307a07e92f553d93afea4cbc32
Bug: skia:12320
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/479699
Reviewed-by: Eric Boren <0e499112533c8544f0505ea0d08394fb5ad7d8fa@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot