Fix(judgehost): use cgroups v1

roles/configure_judgehost/tasks/main.yml

@@ -6,6 +6,7 @@
       options
       cgroup_enable=memory
       swapaccount=1
+      SYSTEMD_CGROUP_ENABLE_LEGACY_FORCE=1
       systemd.unified_cgroup_hierarchy=0
   notify: Reboot
 - name: Flush handlers