[mutter] ci: Run dconf update before running tests

[Jonas Ådahl <jadahl src gnome org>]

commit 468882ececfa928f88ba99f13d763e609885eb28
Author: Jonas Ådahl <jadahl gmail com>
Date:   Fri May 24 08:48:23 2019 +0200

    ci: Run dconf update before running tests
    
    Otherwise tests will fail due to the following warning:
    
    (mutter-test-runner:3700): dconf-WARNING **: 06:39:42.124: unable to
    open file '/etc/dconf/db/local': Failed to open file
    “/etc/dconf/db/local”: open() failed: No such file or directory; expect
    degraded performance
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/591

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a7bd6f61c..20387db41 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -38,6 +38,7 @@ test-mutter:
     MALLOC_CHECK_: "3"
     NO_AT_BRIDGE: "1"
   script:
+    - dconf update
     - mkdir -m 700 $XDG_RUNTIME_DIR
     - glib-compile-schemas $GSETTINGS_SCHEMA_DIR
     - >