autotest_unused: Set OWNERS = dbeckett, gredelston

BUG=None
TEST=None

Change-Id: I6a0a9c1d88209bcaf00b098e1f47df306e6bac68
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crostestutils/+/2519199
Tested-by: Greg Edelston <gredelston@google.com>
Auto-Submit: Greg Edelston <gredelston@google.com>
Reviewed-by: Kevin Shelton <kmshelton@chromium.org>
Commit-Queue: Kevin Shelton <kmshelton@chromium.org>