Updated the Kernel.php code to the latest Symfony recipe
Updated the Kernel.php code to the latest Symfony recipe

javiereguiluz/symfony-demo,symfony/symfony-demo,bocharsky-bw/symfony-demo,Codeception/symfony-demo,voronkovich/symfony-demo,yceruto/symfony-demo,voronkovich/symfony-demo,yceruto/symfony-demo,javiereguiluz/symfony-demo,TomasVotruba/symfony-demo,voronkovich/symfony-demo,Codeception/symfony-demo,symfony/symfony-demo,bocharsky-bw/symfony-demo,TomasVotruba/symfony-demo,bocharsky-bw/symfony-demo,javiereguiluz/symfony-demo,yceruto/symfony-demo,TomasVotruba/symfony-demo,Codeception/symfony-demo,symfony/symfony-demo