Wrong frontcontroller used

[wizhippo]

On https://github.com/oroinc/environment/blob/d578eb17fcf654ba08f4e879d2a0d176fb50f054/nginx/conf/entrypoint.sh#L16 this will not change the controller as it has been set to a variable now in https://github.com/oroinc/environment/blob/bb17ff36d814fda8962fd20391df5e86dea0e82f/nginx/conf/symfony2.conf#L11