Create port with port_vnic_type and port_profile from config
Create port with port_vnic_type and port_profile from config

modify create_port function to use tempest.conf parameters,
'port_vnic_type' and 'port_profile' in case they are defined.

Change-Id: Id7e4e3c7543498c84d815dccf16dc168d45b6a62

masayukig/tempest,masayukig/tempest,openstack/tempest,cisco-openstack/tempest,cisco-openstack/tempest,openstack/tempest