The Hyper-V driver oldest tests (test_hypervapi.py) are proving hard to
maintain.
The tests in test_hypervapi.py in particular can also be refactored and
split in separate TestCases, one of each *ops module.
This commit refactors the second part of the VMOps test cases.
Change-Id: I5b68a07fa9a4ab1393710677031496c568623757