DiskImage entity does not expose read-latency, write-latency, flush-latency. Needed for display in REST-API
Posted patch at http://gerrit.ovirt.org/#change,4879
Fixed at commit #2f6751851d1b9fa706dad1d32a80b5c95a79cba5
closing ON_QA bugs as oVirt 3.1 was released: http://www.ovirt.org/get-ovirt/