'Get a list of gateway WWNs that can be used as FCP targets.
:param mg_conn:  active XG connection to one of the gateways
:returns:  list of WWNs in openstack format'

def _get_active_fc_targets(self):

    v = self.common.vmem_mg
    active_gw_fcp_wwns = []
    fc_info = v.adapter.get_fc_info()
    for x in fc_info.values():
        active_gw_fcp_wwns.append(x[0])
    return active_gw_fcp_wwns
