[gnome-continuous] gvfs: disable afc backend support

[Iñigo Martínez <inigomartinez src gnome org>]

commit e70c49f06043846d474f104b01ac5760264af9b1
Author: Iñigo Martínez <inigomartinez gmail com>
Date:   Thu Apr 5 19:45:23 2018 +0200

    gvfs: disable afc backend support
    
    The image used in gnome-continuous does not have support for
    `libimobiledevice-1.0` library, which is necessary for the `afc`
    backend support.
    
    Due to this missing library, the `afc` backend support is disabled.

 manifest.json |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/manifest.json b/manifest.json
index 5da1f37..94a7ec6 100644
--- a/manifest.json
+++ b/manifest.json
@@ -845,6 +845,7 @@
 
                {"src": "gnome:gvfs",
                 "config-opts": ["-Dinstalled_tests=true",
+                                 "-Dafc=false",
                                  "-Dgphoto2=false"]},
 
                {"src": "gnome:gnome-bluetooth",