gw3/ipv4: show protocols all p_mast

p_mast Pipe master up 2017-08-30 => ibgp

Preference:     70
  Input filter:   (unnamed)
  Output filter:  REJECT
  Routes:         19 imported, 0 exported
  Route change stats:     received   rejected   filtered    ignored   accepted
    Import updates:        3824951          0    3824851          0        100
    Import withdraws:      1487935          0        ---    1487854         81
    Export updates:        3824951        100    3824851          0          0
    Export withdraws:      1487935          0        ---          0          0