Add initial support for showing and querying nested containers.
This is done through a new --nesting argument to lxc-ls and uses
lxc-attach to go look for sub-containers.
Known limitations include the dependency on setns support for the PID
and NETWORK namespaces and the assumption that LXCPATH f
Quoting Stéphane Graber (stgra...@ubuntu.com):
> Add initial support for showing and querying nested containers.
>
> This is done through a new --nesting argument to lxc-ls and uses
> lxc-attach to go look for sub-containers.
>
> Known limitations include the dependency on setns support for the P
