Merge "Make `tests` configuration option optional." into main am: e64a580e9f am: fe3997ee8c am: 76fe17ccaa am: 774215139c

Original change: https://android-review.googlesource.com/c/platform/development/+/2710054

Change-Id: I9c8036b9f4a0861c01426a3abbb57dd0ec935b6f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>