[gnome-usage] CI: Install redhat-rpm-config

[Adrien Plazas <aplazas src gnome org>]

commit 56eb3c2a7ce271db7fded914db5349cd4ad6fcd2
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Mon Sep 23 17:06:19 2019 +0200

    CI: Install redhat-rpm-config
    
    This is needed to access redhat-hardened-cc1 to build the libhandy submodule.

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1e08226..8f04be1 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -14,6 +14,7 @@ build:
     - dnf update -y
     - dnf install -y gcc meson gettext gtk-doc vala gtk3-devel libgtop2-devel 
                      desktop-file-utils libdazzle-devel tracker-devel
+                     redhat-rpm-config
   image: fedora:29
   stage: build
   script: