[gnome-continuous] Disable installed tests for gdk-pixbuf

[Emmanuele Bassi <ebassi src gnome org>]

commit 9f8c4c4803b9a07f6f3b1691963e4a01ee2bfd53
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sun Apr 29 23:32:02 2018 +0100

    Disable installed tests for gdk-pixbuf
    
    There seem to be a regression in Meson, and installing the test data
    subdirectory breaks because of the symlinks to the reference images.

 manifest.json |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/manifest.json b/manifest.json
index 4801c6f..307d74a 100644
--- a/manifest.json
+++ b/manifest.json
@@ -597,7 +597,7 @@
                 "config-opts": ["--disable-default-make-check"]},
 
                {"src": "gnome:gdk-pixbuf",
-                "config-opts": ["-Dman=false", "-Ddocs=false"]},
+                "config-opts": ["-Dman=false", "-Ddocs=false", "-Dinstalled_tests=false"]},
 
                 {"src": "git:https://github.com/sass/libsass.git";,
                  "name": "libsass",