test_runner: Add parent_request_uid

BUG=chromium:1114957
TEST=./generate.sh

Change-Id: Id2524df04e0c7d98127604eab2764eaeb18d89a6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2348024
Tested-by: Alex Zamorzaev <zamorzaev@chromium.org>
Commit-Queue: Prathmesh Prabhu <pprabhu@chromium.org>
Reviewed-by: Prathmesh Prabhu <pprabhu@chromium.org>
Auto-Submit: Alex Zamorzaev <zamorzaev@chromium.org>
2 files changed