'List of VFIDs that can be managed.
:param session_info: Session information from the switch
:returns: manageable VF list
:raises BrocadeZoningHttpException:'

def get_managable_vf_list(self, session_info):

    try:
        vf_list = self.get_nvp_value(session_info, zone_constant.MANAGEABLE_VF)
        if vf_list:
            vf_list = vf_list.split(',')
    except exception.BrocadeZoningHttpException as e:
        msg = (_('Error    while    checking    whether    VF    is    available    for    management    %s.') % six.text_type(e))
        LOG.error(msg)
        raise exception.BrocadeZoningHttpException(reason=msg)
    return vf_list[:(-1)]
