Add missing use for @Cache annotations in HttpCacheListener

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| License       | MIT

This patch will fix this error:
```bash
[Semantical Error] The annotation "@Cache" in class Sensio\Bundle\FrameworkExtraBundle\EventListener\HttpCacheListener was never imported. Did you maybe forget to add a "use" statement for this annotation?
```
I fix this like by adding the use statement like `Sensio\Bundle\FrameworkExtraBundle\EventListener\TemplateListener` but I don't know if it's not better to modify the docblock and add double quotes around the annotation.