[gnome-boxes] flatpak: Add "cdrkit" to provide the "genisoimage" utility

[Felipe Borges <felipeborges src gnome org>]

commit 67d49043f50af2e38f081ed2498b3ab449b8c10e
Author: Felipe Borges <felipeborges gnome org>
Date:   Mon Aug 5 14:15:45 2019 +0200

    flatpak: Add "cdrkit" to provide the "genisoimage" utility
    
    Reviewed-by: Fabiano Fidêncio <fidencio redhat com>

 build-aux/flatpak/org.gnome.Boxes.json | 11 +++++++++++
 1 file changed, 11 insertions(+)
---
diff --git a/build-aux/flatpak/org.gnome.Boxes.json b/build-aux/flatpak/org.gnome.Boxes.json
index 8acce804..f3716c1b 100644
--- a/build-aux/flatpak/org.gnome.Boxes.json
+++ b/build-aux/flatpak/org.gnome.Boxes.json
@@ -337,6 +337,17 @@
                 }
             ]
         },
+        {
+            "name" : "cdrkit",
+            "buildsystem" : "cmake",
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "https://github.com/Distrotech/cdrkit";,
+                    "branch" : "7b4bb72389ea5ea3ecc94545036dcff4728ec38a"
+                }
+            ]
+        },
         {
             "name" : "osinfo-db-tools",
             "sources" : [