Merge "Flag lib link: Use test variant when building test" into main am: 91791857

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/3267641



Change-Id: I6ff3830b0228418de66f0d263270efe7c5979a16
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>