rix-rs2/ipv4: show protocols all Migraph

Migraph BGP --- start 2021-07-07 Passive

Description:    Migraph/35640/AS-MIGRAPH
  BGP state:          Passive
    Neighbor address: 193.27.39.62
    Neighbor AS:      35640
    Local AS:         49634
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   500
      Action:       disable