def post_live_migration_at_source(self, context, instance, network_info):
        self._vmops.unplug_vifs(instance, network_info)
Create user and fetch all trait descriptions.
dataset/ETHPy150Open openstack/compute-hyperv/hyperv/nova/driver.py/HyperVDriver.post_live_migration_at_source--crossover with--dataset/ETHPy150Open openstack/rally/rally/plugins/openstack/scenarios/ceilometer/traits.py/CeilometerTraits.create_user_and_list_trait_descriptions