Fix: duplicate usage of Symfony\Component\HttpFoundation\Response
bug #9190 Fix: duplicate usage of Symfony\Component\HttpFoundation\Response (realsim)

This PR was submitted for the master branch but it was merged into the 2.2 branch instead (closes #9190).

Discussion
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Fix: duplicate usage of Symfony\Component\HttpFoundation\Response

Duplicate usage of Symfony\Component\HttpFoundation\Response causes an error:
> PHP Fatal error:  Cannot use Symfony\Component\HttpFoundation\Response as Response because the name is already in use in src/Symfony/Component/Security/Http/Authorization/AccessDeniedHandlerInterface.php on line 17

Commits
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e602c09 Fix: duplicate usage of Symfony\Component\HttpFoundation\Response