message: fixed issue 310, duplicate info of producer_chain
diff: @@ -96,7 +96,9 @@ void producer_plugin::set_program_options(
  auto private_key_default = std::make_pair(chain::public_key_type(default_priv_key.get_public_key()),
  eos::utilities::key_to_wif(default_priv_key));
  - command_line_options.add_options()
  + boost::program_options::options_description producer_options;
  +
  + producer_options.add_options()
  ("enable-stale-production", boost::program_options::bool_switch()->notifier([this](bool e){my->_production_enabled = e;}), "Enable block production, even if the chain is stale.")
  ("required-participation", boost::program_options::bool_switch()->notifier([this](int e){my->_required_producer_participation = uint32_t(e*config::Percent1);}), "Percent of producers (0-99) that must be participating in order to produce blocks")
  ("producer-name,p", boost::program_options::value<vector<string>>()->composing()->multitoken(),
  @@ -105,7 +107,8 @@ void producer_plugin::set_program_options(
  fc::json::to_string(private_key_default)),
  "Tuple of [PublicKey, WIF private key] (may specify multiple times)")
  ;
  - config_file_options.add(command_line_options);
  + command_line_options.add(producer_options);
  + config_file_options.add(producer_options);
  }
  template<typename T>
  