Fix where dialectOptions are placed in the config object

lib/dialects/mssql/connection-manager.js

@@ -35,7 +35,7 @@ ConnectionManager.prototype.connect = function(config) {
 
     if (config.dialectOptions) {
       Object.keys(config.dialectOptions).forEach(function(key) {
-        connectionConfig[key] = config.dialectOptions[key];
+        connectionConfig.options[key] = config.dialectOptions[key];
       });
     }