'Attach a volume to a node.
:param  node: The node to attach the volume to
:type   node: :class:`Node`
:param  volume: The volume to attach.
:type   volume: :class:`StorageVolume`
:keyword  device: Not used in this cloud.
:type     device: ``None``
:return:  True if successful
:rtype:   ``bool``'

def attach_volume(self, node, volume, device=None):

    op = self.connection.request('hosting.vm.disk_attach', int(node.id), int(volume.id))
    if self._wait_operation(op.object['id']):
        return True
    return False
