pg: remove the useless connection string

lib/dialects/postgres/connection-manager.js

@@ -19,11 +19,32 @@ ConnectionManager = function(dialect, sequelize) {
 Utils._.extend(ConnectionManager.prototype, AbstractConnectionManager.prototype);
 Utils._.extend(ConnectionManager.prototype, AbstractConnectionManager.prototype);
 
 
 ConnectionManager.prototype.connect = function(config) {
 ConnectionManager.prototype.connect = function(config) {
-  var self = this;
+  var self = this
+    , clientConfig = {};
+
+  config.user = config.username;
+
+  if (config.dialectOptions) {
+    clientConfig = Utils._.pick(config.dialectOptions, [
+      // see [http://www.postgresql.org/docs/9.3/static/runtime-config-logging.html#GUC-APPLICATION-NAME]
+      'application_name',
+      // choose the SSL mode with the PGSSLMODE environment variable
+      // object format: [https://github.com/brianc/node-postgres/blob/master/lib/connection.js#L79]
+      // see also [http://www.postgresql.org/docs/9.3/static/libpq-ssl.html]
+      'ssl',
+      // In addition to the values accepted by the corresponding server,
+      // you can use "auto" to determine the right encoding from the
+      // current locale in the client (LC_CTYPE environment variable on Unix systems)
+      'client_encoding',
+      // !! DONT SET THIS TO TRUE !!
+      // (unless you know what you're doing)
+      // see [http://www.postgresql.org/message-id/flat/bc9549a50706040852u27633f41ib1e6b09f8339d845@mail.gmail.com#bc9549a50706040852u27633f41ib1e6b09f8339d845@mail.gmail.com]
+      'binary'
+    ]);
+  }
 
 
   return new Promise(function (resolve, reject) {
   return new Promise(function (resolve, reject) {
-    var connectionString = self.sequelize.getQueryInterface().QueryGenerator.databaseConnectionUri(config)
-      , connection = new self.lib.Client(connectionString)
+    var connection = new self.lib.Client(clientConfig)
       , responded = false;
       , responded = false;
 
 
     connection.connect(function(err) {
     connection.connect(function(err) {