msk-rs2/ipv4: show protocols all firstline

firstline BGP --- up 2021-02-17 Established

Description:    firstline/43267/AS-LINETEL
  BGP state:          Established
    Neighbor address: 185.1.161.12
    Neighbor AS:      43267
    Local AS:         49869
    Neighbor ID:      82.112.184.182
    Local capabilities
      Multiprotocol
        AF announced: ipv4
      Route refresh
      Graceful restart
      4-octet AS numbers
      Enhanced refresh
      Long-lived graceful restart
    Neighbor capabilities
      Multiprotocol
        AF announced: ipv4 ipv4-mc
      Route refresh
      Graceful restart
      4-octet AS numbers
      Long-lived graceful restart
    Session:          external route-server AS4
    Source address:   185.1.161.0
    Hold timer:       60.834/90
    Keepalive timer:  8.127/30
  Channel ipv4
    State:          UP
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable
    Routes:         46 imported, 3 filtered, 102892 exported, 43 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:            174          0          9         92         73
      Import withdraws:           27          0        ---          3         27
      Export updates:         890855        165         65        ---     890625
      Export withdraws:       243425        ---        ---        ---     243488
    BGP Next hop:   185.1.161.0