message: its poor form to log private data
diff: @@ -504,7 +504,8 @@ void producer_plugin::plugin_initialize(const boost::program_options::variables_
  try {
  auto key_id_to_wif_pair = dejsonify<std::pair<public_key_type, private_key_type>>(key_id_to_wif_pair_string);
  my->_signature_providers[key_id_to_wif_pair.first] = make_key_signature_provider(key_id_to_wif_pair.second);
  - wlog("\"private-key\" is DEPRECATED, use \"signature-provider=${pub}=KEY:${priv}\"", ("pub",key_id_to_wif_pair.first)("priv", key_id_to_wif_pair.second));
  + auto blanked_privkey = std::string(std::string(key_id_to_wif_pair.second).size(), '*' );
  + wlog("\"private-key\" is DEPRECATED, use \"signature-provider=${pub}=KEY:${priv}\"", ("pub",key_id_to_wif_pair.first)("priv", blanked_privkey));
  } catch ( fc::exception& e ) {
  elog("Malformed private key pair");
  }
  