bluez-alsa: fix permission issues.

bluealsa is supposed to run in "audio" group, see
arkq/bluez-alsa#2 (comment)

srcpkgs/bluez-alsa/files/bluez-alsa/run

@@ -2,7 +2,7 @@
 
 dir=/var/run/bluealsa
 user=_bluez_alsa
-group=_bluez_alsa
+group=audio
 
 [ ! -d "${dir}" ] && mkdir "${dir}" && chown $user:$group ${dir}
 exec chpst -u $user:$group bluealsa

srcpkgs/bluez-alsa/files/bluez_alsa.conf

@@ -0,0 +1,7 @@
+<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
+ "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
+<busconfig>
+  <policy user="_bluez_alsa">
+    <allow send_destination="org.bluez"/>
+  </policy>
+</busconfig>

srcpkgs/bluez-alsa/template

@@ -1,7 +1,7 @@
 # Template file for 'bluez-alsa'
 pkgname=bluez-alsa
 version=1.3.1
-revision=1
+revision=2
 build_style=gnu-configure
 configure_args="--enable--aac --disable-hcitop --enable-debug"
 hostmakedepends="pkg-config automake libtool"
@@ -14,12 +14,15 @@ homepage="https://github.com/Arkq/bluez-alsa"
 distfiles="https://github.com/Arkq/bluez-alsa/archive/v${version}.tar.gz"
 checksum=29dad23877d0cf46a16e2f8d3746219e89068c33d052059caf1caaacd8b40cac
 system_accounts="_bluez_alsa"
+_bluez_alsa_groups="audio"
 
 pre_configure() {
 	autoreconf -fi
 }
 
 post_install() {
+	vinstall ${FILESDIR}/bluez_alsa.conf 644 etc/dbus-1/system.d/
+
 	vlicense LICENSE.txt
 	vsv bluez-alsa
 }