Update Bluetooth api on SettingsLib

This CL is used to update Bluetooth api.

- Use getConnectionPolicy() instead of getPriority()
- Use setConnectionPolicy() instead of setPriority()
- Use BluetoothProfile.CONNECTION_POLICY_ALLOWED instead of
  BluetoothProfile.PRIORITY_ON
- Use BluetoothProfile.CONNECTION_POLICY_FORBIDDEN instead of
  BluetoothProfile.PRIORITY_OFF

Fixes: 141582844
Test: manually
Change-Id: I2d7438d48acde155e2b411fd98cb59961c8d75c1