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>
Marko Ratkaj