This optional trybot runs all tests not run by the CQ bot, but run by
the CI release or debug bot.

TBR=sergiyb@chromium.org
NOTRY=true

Bug: v8:7285
Change-Id: Ifda294448ba92b8055a633ef1e26b4045a38f718
Reviewed-on: https://chromium-review.googlesource.com/1207852
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55676}