Change the visibility of WebTestCase::setUp to keep the same as in PHPUnit
Change the visibility of WebTestCase::setUp to keep the same as in PHPUnit

see https://github.com/sebastianbergmann/phpunit/blob/ea293f782b3e001c9b7eeb5bdc2d545e4c091fdb/src/Framework/TestCase.php#L1834
romainneutron/Silex,fabpot/Silex,romainneutron/Silex,silexphp/Silex,akucherevskiy/developex_test,fabpot/Silex,mTorres/Silex,romainneutron/Silex,akucherevskiy/developex_test,mTorres/Silex,gencer/Silex,akucherevskiy/developex_test