[seahorse/bilelmoussaoui/flatpak-intltool] Flatpak: add intltool as a submodule of avahi

[Bilal Elmoussaoui <bilelmoussaoui src gnome org>]

commit df55cd403e77e88e2f44f4e46c207e20ab85703d
Author: Bilal Elmoussaoui <bil elmoussaoui gmail com>
Date:   Fri Sep 6 23:55:16 2019 +0000

    Flatpak: add intltool as a submodule of avahi
    
    Freedesktop runtime removed intltool in favor of gettext
    Which is the reason to build it before building avahi.

 build-aux/org.gnome.Seahorse.json | 13 +++++++++++++
 1 file changed, 13 insertions(+)
---
diff --git a/build-aux/org.gnome.Seahorse.json b/build-aux/org.gnome.Seahorse.json
index b09898bb..068c2ea7 100644
--- a/build-aux/org.gnome.Seahorse.json
+++ b/build-aux/org.gnome.Seahorse.json
@@ -56,6 +56,19 @@
                     "url": "https://avahi.org/download/avahi-0.7.tar.gz";,
                     "sha256": "57a99b5dfe7fdae794e3d1ee7a62973a368e91e414bd0dfa5d84434de5b14804"
                 }
+            ],
+            "modules": [
+                {
+                  "name": "intltool",
+                  "cleanup": [ "*" ],
+                  "sources": [
+                    {
+                      "type": "archive",
+                      "url": "https://launchpad.net/intltool/trunk/0.51.0/+download/intltool-0.51.0.tar.gz";,
+                      "sha256": "67c74d94196b153b774ab9f89b2fa6c6ba79352407037c8c14d5aeb334e959cd"
+                    }
+                  ]
+                }
             ]
         },
         {