rs2/ipv4: show protocols all rpki1

rpki1 RPKI --- start 2019-08-20 Connecting

Cache server:     195.95.178.11:8282
  Status:           Connecting
  Transport:        Unprotected over TCP
  Protocol version: 1
  Session ID:       ---
  Serial number:    ---
  Last update:      ---
  Refresh timer   : ---
  Retry timer     : 2.690/5
  Expire timer    : ---
  Channel roa4
    State:          DOWN
    Table:          t_roa4
    Preference:     100
    Input filter:   ACCEPT
    Output filter:  REJECT
  Channel roa6
    State:          DOWN
    Table:          t_roa6
    Preference:     100
    Input filter:   ACCEPT
    Output filter:  REJECT