lxc_list: Option to display number of processes
lxc_list: Option to display number of processes

Signed-off-by: David Negreira <d27937f914ebe99ee315f04449678eccfb658191@otherreality.net>

erikmack/lxd,mjeanson/lxd,pcdummy/lxd,hallyn/lxd,stgraber/lxd,atxwebs/lxd,stgraber/lxd,hallyn/lxd,Skarlso/lxd,atxwebs/lxd,stgraber/lxd,lxc/lxd,mjeanson/lxd,jsavikko/lxd,jsavikko/lxd,stgraber/lxd,pcdummy/lxd,jsavikko/lxd,hallyn/lxd,hallyn/lxd,atxwebs/lxd,lxc/lxd,stgraber/lxd,stgraber/lxd,lxc/lxd,erikmack/lxd,erikmack/lxd,atxwebs/lxd,stgraber/lxd,mjeanson/lxd,lxc/lxd,Skarlso/lxd,lxc/lxd,lxc/lxd,hallyn/lxd,pcdummy/lxd,hallyn/lxd,Skarlso/lxd,Skarlso/lxd,lxc/lxd