Do not delete all/specified EBS volumes upon instance termination

    CLI Example:

    .. code-block:: bash

        salt-cloud -a keepvol_on_destroy mymachine

def keepvol_on_destroy(name, kwargs=None, call=None):
    '''
    Do not delete all/specified EBS volumes upon instance termination

    CLI Example:

    .. code-block:: bash

        salt-cloud -a keepvol_on_destroy mymachine
    '''
    if call != 'action':
        raise SaltCloudSystemExit(
            'The keepvol_on_destroy action must be called with -a or --action.'
        )

    if not kwargs:
        kwargs = {}

    device = kwargs.get('device', None)
    volume_id = kwargs.get('volume_id', None)

    return _toggle_delvol(name=name, device=device,
                          volume_id=volume_id, value='false')