Updated car emulator audio configuration

Updated car emulator target car_audio_configuration.xml file to version
2. The new version requires audioZoneId be defined in all zones except
for primary zone. Also Added occupantZoneId to primary zone. Other
targets, like multi-display, should be updated independently as the
number of occupants will vary in those files.

Bug: 148292262
Test: lunch gcar_hl_md_emu_x86-userdebug, m -j
Test: emulator -skin 1280x720 -verbose -show-kernel -selinux permissive
  -no-snapstorage -no-cache -prop ro.aae.simulateMultiZoneAudio=true
  -prop aae.playZoneId=2
Test: atest CarAudioZonesHelperTest
Test: atest CarAudioZoneTest
Test: atest CarOccupantZoneServiceTest

Change-Id: If04c01a9b803ed41ee3fbb0e6c85f090c14f7c7e