This is the first bugfix release for LXC 2.1. Full list of changes can
be found here:

https://linuxcontainers.org/lxc/news/

Signed-off-by: Marko Ratkaj <marko.ratkaj@sartura.hr>

Bump LXC package from 1.1.5 to 2.1.0. Version 2.x includes many
improvements and optimizations.

https://linuxcontainers.org/lxc/news/

Some tools like lxc-top are rewritten in C and are no longer broken and
dependent on lua.

Signed-off-by: Marko Ratkaj <marko.ratkaj@sartura.hr>