Updated openstack/openstack
Project: openstack/ceilometer  2fb89503fd92a1335bfe016dcfdcbd1eb0709840
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Fixes Hyper-V Inspector disk metrics bug

Changed disk metric names used by Hyper-V utils.

Was using wrong metric names before. 'Aggregated Disk Data Read/Written'
metrics refers to all disks (sum), while the metrics needs to be per disk.

(cherry picked from commit 39c0ca654743513ab158fac399813a1a557ab61e)

Change-Id: I4ec36152a8b8147069151dd6eb98f36f7aab9229
Closes-Bug: 1250336