BUG: Mk_docker and Proxmox agent broken on cgroupv2 environments (container level): "Parsing of section docker_container_mem failed"

I can assure you that we have easily put 20+ hours in fixing this. We are reworking the entire lxc and docker checks to the new Check-API as part of this fix. Thus not just doing a workaround, but a proper long-term fix, which helps us maintain this plug-in more easily in the future as well.