Drilling into a node doesn't find by css class correctly if looking for the parent element of the component

For a component structured as so:
```html
<div className="my-class">
  ...
</div>
```

This test fails:
```javascript
assert.ok(drill(subject).has('div', m.hasClass('my-class')))
```

But this test passes:
```javascript
assert.ok(drill(subject).has(MyComponent, m.hasClass('my-class')))
```