changed services to be public for compat with Symfony 4
changed services to be public for compat with Symfony 4

fabpot/DoctrineBundle,OskarStark/DoctrineBundle,gencer/DoctrineBundle,OskarStark/DoctrineBundle,fabpot/DoctrineBundle,mikeSimonson/DoctrineBundle,nicolas-grekas/DoctrineBundle,nicolas-grekas/DoctrineBundle,mikeSimonson/DoctrineBundle,doctrine/DoctrineBundle,gencer/DoctrineBundle