Import vue into spec

spec/javascripts/boards/board_new_issue_spec.js

-/* global Vue */
 /* global boardsMockInterceptor */
 /* global BoardService */
 /* global List */
 /* global listObj */
+import Vue from 'vue';
 import boardNewIssue from '~/boards/components/board_new_issue';
 require('~/boards/models/list');