[gnome-control-center] Add GSound as a build-dependecy

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 1c5ac9abf991b70b097a11d66752741a86bd7016
Author: Robert Ancell <robert ancell canonical com>
Date:   Mon Nov 19 12:44:45 2018 +1300

    Add GSound as a build-dependecy

 .gitlab-ci.yml | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c4e1a0235..be9c9b555 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -46,6 +46,8 @@ build:
   stage: build
 
   script:
+    - dnf -y install gsound-devel # FIXME: Remove when new images built
+
     - *environment_information
     - *build_procedure
 
@@ -261,6 +263,7 @@ stop_review:
   stage: manual
   when: manual
   script:
+    - dnf -y install gsound-devel # FIXME: Remove when new images built
     - *environment_information
     - *build_procedure
     - *run_tests