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>
Closes-bug: #1291364
(cherry picked from commit 73da55e4ef626283ae58a97c7ad89854ec77daa3)

Conflicts:
	nova/tests/virt/hyperv/test_vmops.py
	nova/tests/virt/hyperv/test_vmutils.py
	nova/tests/virt/hyperv/test_vmutilsv2.py
	nova/virt/hyperv/vmutils.py

Change-Id: I9c58168c012b342bb5dfa0c62a7c39a327f442b3
Merge "Adds list_instance_uuids to the Hyper-V driver" into stable/icehouse