Add missing dependencies

[remicollet]

From phpcompatinfo report for phpcompatinfo sources

Classes Analysis

    Class                                                                      REF        EXT min/Max     PHP min/Max 
    ArrayIterator                                                              spl        5.0.0           5.0.0       
...
  U Psr\Log\LoggerInterface                                                    user                       5.3.0       
...
  U Symfony\Component\Config\FileLocator                                       user                       5.3.0       
  U Symfony\Component\Console\Event\ConsoleCommandEvent                        user                       5.3.0       
  U Symfony\Component\Console\Event\ConsoleTerminateEvent                      user                       5.3.0       
  U Symfony\Component\Console\Formatter\OutputFormatterInterface               user                       5.3.0       
  U Symfony\Component\Console\Formatter\OutputFormatterStyle                   user                       5.3.0       
  U Symfony\Component\Console\Helper\FormatterHelper                           user                       5.3.0       
  U Symfony\Component\Console\Helper\ProgressBar                               user                       5.3.0       
  U Symfony\Component\Console\Helper\TableSeparator                            user                       5.3.0       
  U Symfony\Component\Console\Input\ArgvInput                                  user                       5.3.0       
  U Symfony\Component\Console\Input\InputArgument                              user                       5.3.0       
  U Symfony\Component\Console\Input\InputDefinition                            user                       5.3.0       
  U Symfony\Component\Console\Input\InputInterface                             user                       5.3.0       
  U Symfony\Component\Console\Input\InputOption                                user                       5.3.0       
  U Symfony\Component\Console\Output\ConsoleOutput                             user                       5.3.0       
  U Symfony\Component\Console\Output\OutputInterface                           user                       5.3.0       
  U Symfony\Component\DependencyInjection\ContainerBuilder                     user                       5.3.0       
  U Symfony\Component\DependencyInjection\ContainerInterface                   user                       5.3.0       
  U Symfony\Component\DependencyInjection\Loader\PhpFileLoader                 user                       5.3.0       
  U Symfony\Component\EventDispatcher\EventDispatcher                          user                       5.3.0       
  U Symfony\Component\EventDispatcher\EventDispatcherInterface                 user                       5.3.0       
  U Symfony\Component\EventDispatcher\EventSubscriberInterface                 user                       5.3.0       
  U Symfony\Component\EventDispatcher\GenericEvent                             user                       5.3.0       
  U Symfony\Component\Finder\Finder                                            user                       5.3.0       
  U Symfony\Component\Finder\SplFileInfo                                       user                       5.3.0       
  U Symfony\Component\Serializer\Normalizer\NormalizerInterface                user                       5.3.0       
  U Symfony\Component\Stopwatch\Stopwatch                                      user                       5.3.0       
...

[remicollet]

P.S. will be nice to have the "hacktoberfest" topic for this repository, or "hacktoberfest-accepted" label for PR.

See https://hacktoberfest.digitalocean.com/