'Shows details for a port.
For a full list of available parameters, please refer to the official
API reference:
http://developer.openstack.org/api-ref/networking/v2/index.html#show-port-details'

def show_port(self, port_id, **fields):

    uri = ('/ports/%s' % port_id)
    return self.show_resource(uri, **fields)
