Update roles/ganetisetup/tasks/prerequisites.yml, roles/ganetisetup/tasks/hosts.yml, roles/ganetisetup/tasks/defaults.yml, roles/ganetisetup/handlers/main.yml, roles/ganetisetup/tasks/ganeti.yml, roles/ganetisetup/tasks/ssh.yml, roles/ganetisetup/tasks/exim.yml, roles/ganetisetup/tasks/chrony.yml, roles/ganetisetup/tasks/monitoring.yml, roles/ganetisetup/tasks/firewall.yml