[NetworkManager-fortisslvpn] build: drag in appstream

[Lubomir Rintel <lkundrak src gnome org>]

commit 405d9719eb872b216a18e7c8406ca8ec69e6b22f
Author: Lubomir Rintel <lkundrak v3 sk>
Date:   Thu Apr 11 13:46:12 2019 +0200

    build: drag in appstream
    
    We need the ITS rules for gettext.

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7e4c53c..caff5a7 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -20,6 +20,7 @@
       NetworkManager-libnm-devel
       pkgconfig
       ppp-devel
+      appstream
 
 # Disable fetching Git, run after the tarball is rolled
 .dist: &dist