Temporarely switch to nova HyperVDriver
Temporarely switch to nova HyperVDriver

Switch to nova HyperVDriver until compute-hyperv's stable/mitaka branch is cut.
rbuzatu90/hyperv-networking-ci,cloudbase/hyperv-networking-ci,andreibacos/hyperv-networking-ci,cloudbase/hyperv-networking-ci,rbuzatu90/hyperv-networking-ci,andreibacos/hyperv-networking-ci