[nautilus] CI: Ubuntu: Update before installing packages to fetch the metadata

[Carlos Soriano <csoriano src gnome org>]

commit fcaae18d7663172c5627b8493f2c50f2fe72e268
Author: Carlos Soriano <csoriano1618 gmail com>
Date:   Sat Mar 17 12:23:19 2018 +0000

    CI: Ubuntu: Update before installing packages to fetch the metadata

 .gitlab-ci.yml | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7597bbd0b..efc1dbfc6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -73,6 +73,8 @@ test:Ubuntu:
     image: ubuntu:devel
     stage: WeeklyTest
     script:
+    # Ubuntu requires running update to fetch metadata and find packges
+    - apt update
     - apt install -y gcc meson gettext itstool git libgtk-3-dev
                      libgnome-autoar-0-dev libgnome-desktop-3-dev
                      gobject-introspection libxml2-dev