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

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

Change-Id: Iddba4582551e1d992e8b161817281c9ed04fc128
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>