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:         68540 imported, 0 exported, 68540 preferred
  Route change stats:     received   rejected   filtered    ignored   accepted
    Import updates:       17346219          0          0     468789   16877430
    Import withdraws:      6099062          0        ---        380    6098682
    Export updates:       16948687   16948687          0        ---          0
    Export withdraws:      6098682        ---        ---        ---      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:       226/240
    Keepalive timer:  58/80