This will allow us to avoid packaging cctest into official archives, while still
keeeping them around for refbuilds. As a result, official archives will become a
lot smaller.

Corresponding recipe change: https://crrev.com/c/1517881

R=machenbach@chromium.org, tmrts@chromium.org

Bug: v8:8969
Change-Id: Icf67d2f6dd5dc4d4a4f32f9b5c5ef21758410546
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1517880
Commit-Queue: Sergiy Belozorov <sergiyb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60193}