[pitivi/1.0] flatpak: Add --socket=session-bus again, seems necessary when using from repo

[Thibault Saunier <tsaunier src gnome org>]

commit e6ea6f05bc7491a4fa1db46cc789812989db508a
Author: Thibault Saunier <tsaunier gnome org>
Date:   Fri Aug 25 20:47:31 2017 -0300

    flatpak: Add --socket=session-bus again, seems necessary when using from repo
    
    Otherwise we get:
    
      Failed to register: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: 
org.freedesktop.DBus.Error.ServiceUnknown
    
    I am not sure what this is due to, but sharing the whole session bus
    should work and be good enough for now (we are not really sandboxed yet
    anyway).

 build/flatpak/pitivi.template.json |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/build/flatpak/pitivi.template.json b/build/flatpak/pitivi.template.json
index 7da12af..d107f9e 100644
--- a/build/flatpak/pitivi.template.json
+++ b/build/flatpak/pitivi.template.json
@@ -7,6 +7,7 @@
                     "--socket=x11",
                     "--socket=pulseaudio",
                     "--socket=wayland",
+                    "--socket=session-bus",
                     "--talk-name=ca.desrt.dconf",
                     "--talk-name=org.freedesktop.Notifications",
                     "--filesystem=host", "--device=dri"],