[niepce] flatpak: allow network while building for cargo dependency upload

[Hubert Figuière <hub src gnome org>]

commit 752d49e9e803fd093e88e80faae0bb97e1d9615c
Author: Hubert Figuière <hub figuiere net>
Date:   Mon Dec 31 17:51:58 2018 -0500

    flatpak: allow network while building for cargo dependency upload

 flatpak/org.gnome.Niepce.json | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/flatpak/org.gnome.Niepce.json b/flatpak/org.gnome.Niepce.json
index 6c16b78..d438ab7 100644
--- a/flatpak/org.gnome.Niepce.json
+++ b/flatpak/org.gnome.Niepce.json
@@ -26,6 +26,7 @@
         "--env=DCONF_USER_CONFIG_DIR=.config/dconf"
     ],
     "build-options" : {
+        "build-args": ["--share=network"],
         "cflags" : "-O2 -g",
         "cxxflags" : "-O2 -g",
         "env" : {