message: Update error_catch.py
  When init error occurs,  kill process by gid
diff: @@ -11,6 +11,7 @@ import functools
  import re
  from .proto import pipeline_service_pb2_grpc, pipeline_service_pb2
  from .util import ThreadIdGenerator
  +from paddle_serving_server.util import kill_stop_process_by_pid
  _LOGGER = logging.getLogger(__name__)
  @@ -91,7 +92,9 @@ class ErrorCatch():
  if is_send_to_user == "True":
  return (None, resp)
  else:
  - raise SystemExit("init server error occur")
  + print("Erro_Num: {} {}".format(resp.err_no, resp.err_msg))
  + print("Init error occurs. For detailed information, Please look up log by log_id.")
  + kill_stop_process_by_pid("kill", os.getpgid(os.getpid()))
  except Exception as e:
  log_id = self._id_generator.next()
  resp = pipeline_service_pb2.Response()
  