Updated openstack/openstack
Project: openstack/ceilometer  551b948096ae7753ecb97289b84a3f8e7987717c

XenAPI support: Changes for networking metrics

Implemented inspect_vnic_rates() to inspect the vNIC rate statistics
for an instance.

Change-Id: Ic8fb59904f5ff8fc05819b9414b7730b8746bfad
Implements: blueprint xenapi-support