spb-rs1/ipv4: show protocols all elcat

elcat BGP --- start 2021-10-08 Passive Received: Other configuration change

Description:    elcat/8449/AS-ELCAT
  BGP state:          Passive
    Neighbor address: 185.1.153.117
    Neighbor AS:      8449
    Local AS:         50817
    Last error:       Received: Other configuration change
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable