[gnome-shell/test-3-32] Get out the shell debug hammer

[Florian Müllner <fmuellner src gnome org>]

commit bb6c8eb25ade2a7093e3d0735e970934967fbcfc
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Apr 25 23:11:11 2019 +0200

    Get out the shell debug hammer

 .gitlab-ci/checkout-mutter.sh | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/.gitlab-ci/checkout-mutter.sh b/.gitlab-ci/checkout-mutter.sh
index 618ad2582..e268e0570 100755
--- a/.gitlab-ci/checkout-mutter.sh
+++ b/.gitlab-ci/checkout-mutter.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/bash
 
+set -x
+
 shell_branch=$(git describe --contains --all HEAD)
 mutter_target=