Atom: Update BluetoothConnectionStateChanged atom

* Use salted hashed Bluetooth device identifier and deprecate old
  ofuscted_id
* Add BluetoothAclConnectionStateChanged and BluetoothScoConnectionStateChanged
  to track ACL and SCO connections

Bug: 112969790
Test: Bluetooth unit test, test drive with statsd
Change-Id: I5398e4caae751e1fe1d6a95fa3bc56d062eb6172
Merged-In: I5398e4caae751e1fe1d6a95fa3bc56d062eb6172
(cherry picked from commit d9837c8a)