'Registers storage system with web service.'

def register_storage_system(self, controller_addresses, password=None, wwn=None):

    path = '/storage-systems'
    data = {'controllerAddresses': controller_addresses}
    data.setdefault('wwn', (wwn if wwn else None))
    data.setdefault('password', (password if password else None))
    return self._invoke('POST', path, data, use_system=False)
