rs2/ipv4: show protocols all pb_4_huaweiclouds_as136907_2

pb_4_huaweiclouds_as136907_2 BGP --- start 2021-02-09 Active Socket: Connection refused

Description:    Huawei Clouds 2
  BGP state:          Active
    Neighbor address: 86.104.125.184
    Neighbor AS:      136907
    Connect delay:    4.051/5
    Last error:       Socket: Connection refused
  Channel ipv4
    State:          DOWN
    Table:          t_4_huaweiclouds_as136907_2
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   500
      Action:       restart