Ember-cli customize test-body layout (content-for)

In the latest version of ember-cli-qunit, the test-body.html template looks like this...

<div id="qunit"></div>
<div id="qunit-fixture"></div>

<div id="ember-testing-container">
  <div id="ember-testing"></div>
</div>

Is there any way to customize this without changing the source directly in the package? This might sound a bit nit-picky, but I'd prefer a slightly different layout when running tests in the browser :).

I can't seem to find much documentation on overriding this template.