rs2-msk/ipv4: show protocols all as51408_296

as51408_296 BGP master down 2019-09-19

Description:    siriusp
  Preference:     100
  Input filter:   (unnamed)
  Output filter:  (unnamed)
  Import limit:   704
    Action:       disable
  BGP state:          Down
    Neighbor address: 178.18.226.156
    Neighbor AS:      51408