The new indicator behaves like verbose without
printing the names of tests that passed. Also
a new option (--ci-test-completion=/path) was
added to represent a file where we can collect
test completion messages.

Bug: v8:9146
Change-Id: I0f1bbef4036a3019b60b094687b734d3d33a5915
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1806916Reviewed-by: Tamer Tas <tmrts@chromium.org>
Commit-Queue: Liviu Rau <liviurau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63837}