[infra] Rename IrisPlus jobs so they don't contain commas.

That was making Gerrit unable to invoke the jobs; the regex for valid
jobs doesn't contain comma.

Change-Id: I9b8a42ab1d5b8ac204895388844bde88a604491f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/514356
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Erik Rose <erikrose@google.com>
2 files changed