[recipes] Allow pulseaudio in the sandbox

[Matthias Clasen <matthiasc src gnome org>]

commit e53efabff058ee55f298902199fd271600e56d59
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Feb 17 20:41:42 2017 -0500

    Allow pulseaudio in the sandbox
    
    This is necessary to make timer expiry sounds work.

 org.gnome.Recipes.flatpak.json |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/org.gnome.Recipes.flatpak.json b/org.gnome.Recipes.flatpak.json
index 95505fc..3478aa4 100644
--- a/org.gnome.Recipes.flatpak.json
+++ b/org.gnome.Recipes.flatpak.json
@@ -8,6 +8,7 @@
         "--share=ipc",
         "--socket=x11",
         "--socket=wayland",
+        "--socket=pulseaudio",
         "--filesystem=xdg-run/dconf",
         "--filesystem=~/.config/dconf:ro",
         "--talk-name=ca.desrt.dconf",