Add an interfaces to a slice

def virtual_interface_create(self, name, net_name):
        '''
        Add an interfaces to a slice
        '''
        nt_ks = self.compute_conn
        serverid = self._server_uuid_from_name(name)
        networkid = self.network_show(net_name).get('id', None)
        if networkid is None:
            return {net_name: False}
        nets = nt_ks.virtual_interfaces.create(networkid, serverid)
        return nets