Migrate packages/apps/Bluetooth to androidx.test

See go/jetpack-test-android-migration

Test: mmma packages/apps/Bluetooth
Change-Id: I7d33f8ae90a6fff1fe5b43aa0ce7a7938fa33e49
Merged-In: I489bd558f70c0e1a9ba5de694ec832614c5c5fd3
43 files changed