fixed some tests for Symfony 2.2
fixed some tests for Symfony 2.2

CarsonF/Silex,Tobion/Silex,GromNaN/Silex,Xephi/Silex,mmauri04/Silex,SanderKnape/Silex,cesarmarinhorj/Silex,RayRutjes/Silex,arduanov/Silex,mmauri04/Silex,CarsonF/Silex,tcx1000/Silex,cgsmith/Silex,naderman/Silex,arduanov/Silex,GromNaN/Silex,akucherevskiy/developex_test,romainneutron/Silex,mathroc/Silex,silexphp/Silex,fabpot/Silex,romainneutron/Silex,cesarmarinhorj/Silex,lokhman/Silex,JPry/Silex,plotek/Silex,lokhman/Silex,akucherevskiy/developex_test,Incognito/silex-fork,gencer/Silex,mathroc/Silex,CarsonF/Silex,naderman/Silex,peterkokot/Silex,Incognito/silex-fork,fhinkel/Silex,Tobion/Silex,naderman/Silex,JPry/Silex,Tobion/Silex,SanderKnape/Silex,beealone/Silex,GromNaN/Silex,Xephi/Silex,tcx1000/Silex,mTorres/Silex,peterkokot/Silex,RayRutjes/Silex,SpacePossum/Silex,beealone/Silex,fhinkel/Silex,jdreesen/Silex,plotek/Silex,peterkokot/Silex,SpacePossum/Silex,jdreesen/Silex,fabpot/Silex,akucherevskiy/developex_test,romainneutron/Silex,cgsmith/Silex,mTorres/Silex