Merge pull request #3098 from XemsDoom/ms-sql-instanceName-support

Adds support for instance name based MS SQL connections.

lib/dialects/mssql/connection-manager.js

@@ -28,11 +28,15 @@ ConnectionManager.prototype.connect = function(config) {
       server: config.host,
       server: config.host,
       /* domain: 'DOMAIN' */
       /* domain: 'DOMAIN' */
       options: {
       options: {
-        port: config.port,
         database: config.database,
         database: config.database,
       }
       }
     };
     };
 
 
+    // only set port if no instance name was provided
+    if(!config.dialectOptions.instanceName){
+      connectionConfig.options.port = config.port;
+    }
+
     if (config.dialectOptions) {
     if (config.dialectOptions) {
       Object.keys(config.dialectOptions).forEach(function(key) {
       Object.keys(config.dialectOptions).forEach(function(key) {
         connectionConfig.options[key] = config.dialectOptions[key];
         connectionConfig.options[key] = config.dialectOptions[key];