Set max_microversion 2.43 for virtual_interfaces tests

The compute os-virtual-interfaces API is deprecated from the
Microversion 2.44, so we should set max_microversion = '2.43'
for compute virtual_interfaces tests.

Change-Id: Ie1793802fa33898ffbdad16b58b085894e66d4d1
ref: https://developer.openstack.org/api-ref/compute/#list-virtual-interfaces
2 files changed