Add coverage for bluetooth API

Bug: 217352944
Test: atest 'CtsBluetoothTestCases:android.bluetooth.cts.BluetoothAdapterTest'
Test: atest CtsBluetoothTestCases
Tag: #refactor
Merged-In: I23acad1ca7e3833bff0d98ebc7057ac14756be45
Change-Id: I23acad1ca7e3833bff0d98ebc7057ac14756be45
13 files changed