avahi: fixup init scripts after default user removal

Commit d3ccfa362b (avahi: run as avahi user/group instead of default)
changed avahi-autoipd to run as the avahi user, but forgot to update the
init script/systemd config to match.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/avahi/S05avahi-setup.sh

@@ -5,7 +5,7 @@ case "$1" in
 	if [ ! -d /tmp/avahi-autoipd ]; then
 	    rm -rf /tmp/avahi-autoipd
 	    mkdir /tmp/avahi-autoipd
-	    chown default.default /tmp/avahi-autoipd
+	    chown avahi.avahi /tmp/avahi-autoipd
 	fi
 	;;
     stop) ;;

package/avahi/avahi_tmpfiles.conf

@@ -1 +1 @@
-d /tmp/avahi-autopid 0755 default default
+d /tmp/avahi-autopid 0755 avahi avahi