Updated openstack/openstack
Project: openstack/ceilometer  2fc70c3e8d8d5cf6a41b313255d4d7e00a22d29a

XenAPI support: Changes for cpu_util

Implemented inspect_cpu_util() to inspect the CPU utilization (%)
for an instance.

Change-Id: I0cd1c926f074be632d9c5ce071dfd4d0d3ba78a7
Implements: blueprint xenapi-support