This update for lxcfs fixes the following issues:

Update to LXCFS 4.0.1.

The full upstream changelog is available from:

https://discuss.linuxcontainers.org/t/lxcfs-4-0-lts-has-been-released/7031
https://discuss.linuxcontainers.org/t/lxcfs-4-0-1-lts-has-been-released/7130

Related to the LXD 4.0.0 update (boo#1168338).

+ cgroup2: Support for the new unified cgroup hierarchy
+ /proc/cpuinfo and cpu output in /proc/stat based on cpu shares
+ /proc/loadavg virtualization
+ pidfd supported process tracking
* Improved command line options
* Compiler based hardening
* Minimal compiler based resource management