Add a bot to run with reduced ops task splitting

Change-Id: I2df0053ec7f26490d7b40b868b249d539d0c1530
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/329964
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Adlai Holler <adlai@google.com>
6 files changed