rename addons.js to services.js

services is the named container (services view)
addons is more like a heroku concept

src/ldap.js

@@ -1,12 +1,11 @@
 'use strict';
 
 exports = module.exports = {
-    start: start,
-    stop: stop
+    start,
+    stop
 };
 
-var addons = require('./addons.js'),
-    assert = require('assert'),
+const assert = require('assert'),
     appdb = require('./appdb.js'),
     apps = require('./apps.js'),
     async = require('async'),
@@ -20,6 +19,7 @@ var addons = require('./addons.js'),
     mailboxdb = require('./mailboxdb.js'),
     path = require('path'),
     safe = require('safetydance'),
+    services = require('./services.js'),
     users = require('./users.js');
 
 var gServer = null;
@@ -572,7 +572,7 @@ function authenticateSftp(req, res, next) {
 }
 
 function loadSftpConfig(req, res, next) {
-    addons.getServicesConfig('sftp', function (error, service, servicesConfig) {
+    services.getServicesConfig('sftp', function (error, service, servicesConfig) {
         if (error) return next(new ldap.OperationsError(error.toString()));
 
         req.requireAdmin = servicesConfig['sftp'].requireAdmin;