Move bt_host_test_bta::bta::bta_av_test => net_test_bta am: e3b6ff65 am: 788472a1

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2829371



Change-Id: I5faf5b82b787475d84b514abf96b42bace1b60d7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>