vm-birdlg/ipv4: show protocols all rs2

rs2 BGP Trs2 up 2020-07-24 Established

Description:    session avec RR-l1
  Preference:     100
  Input filter:   ACCEPT
  Output filter:  REJECT
  Routes:         66352 imported, 0 exported, 66352 preferred
  Route change stats:     received   rejected   filtered    ignored   accepted
    Import updates:       14622297          0          0     343280   14279017
    Import withdraws:      5140300          0        ---        232    5140068
    Export updates:       14350274   14350274          0        ---          0
    Export withdraws:      5140068        ---        ---        ---      71240
  BGP state:          Established
    Neighbor address: 77.95.71.5
    Neighbor AS:      43100
    Neighbor ID:      77.95.71.5
    Neighbor caps:    refresh enhanced-refresh restart-aware AS4
    Session:          external AS4
    Source address:   77.95.71.15
    Hold timer:       221/240
    Keepalive timer:  9/80