The function can be called by chromium_test to set a property 'do_not_retry'
which will be propagated into buildbucket output.

Change-Id: I32d8ea925b7cb98d9b25d24226686e116c17801c
Bug: 910193
Reviewed-on: https://chromium-review.googlesource.com/c/1351542
Commit-Queue: Erik Chen <erikchen@chromium.org>
Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>