Merge "[Thread] add service unit test skeleton" into main am: 3deb5da6db am: 085124d6f0

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2888486

Change-Id: Idd6edc487da7c281c0eee144f4a2cb505f067cc8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>