Add functional test for bt anomaly detector

This cl:
Set up the environment for functional test
1. Update Android.mk by adding instrumentation and libs
2. Update AndroidManifest.xml by adding runner

Add functional test for bt anomaly, with the following workflow
1. reset battery stats
2. pretend unplug and screen off
3. Start AnomalyTester app, set values and click start button
4. Wait its running
5. Check anomaly preference in battery main page
6. reset all parameters

Bug: 63815938
Test: runtest -x BluetoothAnomalyTest
Change-Id: Ief02a314d21f6c32d70729047a1d4bdce9ad9920