[bug 14208] Remove ganglia.
Related to bug 14208.
This merge request remove ganglia's virtual machines from the ref-repo.
[A venir] Mise en place de quotas sur nos instances GitLab. Plus d'information sur : https://doc-si.inria.fr/pages/viewpage.action?pageId=129728565
[Coming soon] Quotas installation on our GitLab instances. More information: https://doc-si.inria.fr/pages/viewpage.action?pageId=129728565
Related to bug 14208.
This merge request remove ganglia's virtual machines from the ref-repo.