[gnome-usage] CI: Install all missing dependencies using dnf

[Gitlab System User <gitlab src gnome org>]

commit 8004751b800e1de52bad58b0c3038b6b8ce1de62
Author: Radhika Dua <radhikadua1997 gmail com>
Date:   Thu Oct 19 13:18:54 2017 +0530

    CI: Install all missing dependencies using dnf
    
    vala
    gtk3-devel
    libgtop2-devel
    desktop-file-utils

 .gitlab-ci.yml | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5f9aa8e..78c57fb 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,7 +2,16 @@ image: fedora:26
 stages:
   - build
 before_script:
-  - dnf install -y gcc meson ninja-build gettext gtk-doc glib2-devel
+  - dnf install -y gcc \
+    meson \
+    ninja-build \
+    gettext \
+    gtk-doc \
+    glib2-devel \
+    vala \
+    gtk3-devel \
+    libgtop2-devel \
+    desktop-file-utils
 build-gnome-usage:
   stage: build
   script: