Adds list_instance_uuids to the Hyper-V driver

In case of large number of servers, the _destroy_evacuated_instances
fails randomly. Implementing list_instance_uuids solves the issue.

Co-Authored-By: Robert Tingirica <rtingirica@cloudbasesolutions.com>
Co-Authored-By: Ionut Balutoiu <ibalutoiu@cloudbasesolutions.com>
Change-Id: I9c58168c012b342bb5dfa0c62a7c39a327f442b3
Closes-bug: #1291364
Add bandwidth usage object

Added bandwidth usage object and tests for it

Blueprint: compute-manager-objects-juno
Change-Id: I81a0a35e05cedb1f9eeff97bfe6e539166a23883
Merge "Adds list_instance_uuids to the Hyper-V driver"
Merge "Add bandwidth usage object"