Enable audio management with Sound Manager automatically

Enable audio management with Sound Manager automatically

Originally, configuration.xml(Audio policy file for Sound Manager)
must be replaced manually to use Sound Manager.
And /etc/pulse/default.pa file must be modified not to load module router manually for now.
The module-router couldn't coexist with soundmanager for now.
(In the future, coexist for supporting legacy apps)

This patch enables Audio Management system based on
Sound Manager and Genivi Audio Manager automatically.

[Patch Set3]
- Remove bbappend
- Override pulseaudio-config
- Override audiomanager-plugins-config
- Add PREFERRED_PROVIDER to the packagegroup-hmi-framework.bb

[Patch Set6]
- Remove recipes related to soundmanager from hmi-framework
- Create a new feature as agl-audio-soundmanager-framework

[Patch Set7]
- Use PROVIDES instead of RPROVIDES

Bug-AGL: SPEC-1025, SPEC-1026, SPEC-1027

Change-Id: I26e484e130feac2bedc13839110a6208579b8bbc
Signed-off-by: Kazumasa Mitsunari <knimitz@witz-inc.co.jp>