Node 8 (WIP) (#9946)

* start upgrade to node 8

* upgrade travis

* improve travis

* Remove bluebird, babel (except for modules) from server (WIP) (#9947)

* remove bluebird, babel from server (except for modules)

* fixes

* fix path

* fix path

* fix export

* fix export

* fix test

* fix tests

* remove plugin for transform-object-rest-spread since it is supported in node8

* babel: correct syntax rest spread

* remove bluebird

* update migrations archive readme

* fix package-lock.json

* fix typo

* add package-loc

gulp/taskHelper.js

@@ -2,7 +2,6 @@ import { exec }                   from 'child_process';
 import psTree                     from 'ps-tree';
 import nconf                      from 'nconf';
 import net                        from 'net';
-import Bluebird                   from 'bluebird';
 import { post }                   from 'superagent';
 import { sync as glob }           from 'glob';
 import Mocha                      from 'mocha';
@@ -45,7 +44,7 @@ export function kill (proc) {
  * before failing.
  */
 export function awaitPort (port, max = 60) {
-  return new Bluebird((rej, res) => {
+  return new Promise((rej, res) => {
     let socket;
     let timeout;
     let interval;