msk-rs2/ipv4: show protocols all unilink

unilink BGP --- start 2020-06-17 Passive

Description:    unilink/44053/AS-UNILINK/via Unilink
  BGP state:          Passive
    Neighbor address: 185.1.160.92
    Neighbor AS:      44053
    Local AS:         49869
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable