testXHTML: ignore gadget_vcs_status.js from erp5_forge

jsl complains about "class" in object literals, but there's nothing wrong
with this.

portal_skins/erp5_vcs/gadget_vcs_status.js
(17): SyntaxError: invalid property id
      class: true,
7 jobs for feat/coding_style_form_naming
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-Master

passed ERP5.PerformanceTest-Master

failed ERP5.UnitTest-Master

failed ERP5.UnitTest-Master.Medusa

canceled ERP5.UnitTest-TestRunner2

passed SlapOS.Eggs.UnitTest-Master.Python2

passed SlapOS.Eggs.UnitTest-Master.Python3