Use mcc config overlay mechanism to enforce camera shutter sounds
in countries where it is mandatory.
Property ro.camera.sound.forced is not needed anymore.
When camera sound is forced, STREAM_SYSTEM_ENFORCED is removed from
streams affected by ringer mode and its volume is
maxed out. AudioSystem.FORCE_SYSTEM_ENFORCED is sent to audio
policy manager to alter the routing policy for STREAM_SYSTEM_ENFORCED.
Also fix streams being unmuted when settings are reloaded
upon user switch while in silent mode.
Add ringer mode to audio service dump.
Bug 7032634.
Change-Id: Iceea5bba3b8d3aabf8e42b222deb33a893dc8f38
dd45d01128