def process_create_subnet(self, plugin_context, data, result):
        self._call_on_ext_drivers("process_create_subnet", plugin_context,
                                  data, result)
Verifies NORMAL vnic type is not supported.
dataset/ETHPy150Open openstack/neutron/neutron/plugins/ml2/managers.py/ExtensionManager.process_create_subnet--crossover with--dataset/ETHPy150Open openstack/networking-cisco/networking_cisco/tests/unit/ml2/drivers/cisco/ucsm/test_cisco_ucsm_driver.py/TestCiscoUcsmMechDriver.test_normal_vnic_type