Comment 10 for bug 1156456

https://review.openstack.org/223869

Reviving this old issue since trying to generate reports about hypervisor topology using statistics from novaclient yields some hilariously wrong results against NUMA-enabled compute nodes.

We're fans of this approach; let n-cpu count up the cells/sockets/cores/threads in the system and return them as cpu_info attributes. This way the consuming applications can just use the totals given, and don't need to make any assumptions that could be of dubious nature on exotic hardware profiles.