spb-rs2/ipv4: show protocols all CDNet

CDNet BGP --- down 2019-12-14

Description:    CDNet/59730/AS-CDNET-SPB
  BGP state:          Down
    Neighbor address: 31.44.186.2
    Neighbor AS:      59730
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable