minor #221 Extend from AbstractController when using Symfony 4.1 or higher (javiereguiluz)

This PR was squashed before being merged into the 1.0-dev branch (closes #221).

Discussion
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Extend from AbstractController when using Symfony 4.1 or higher

Related to symfony/symfony-docs#9991 ... let's extend from `AbstractController` when possible.

Commits
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2e6403b Extend from AbstractController when using Symfony 4.1 or higher

Author: javiereguiluz

src/Maker/MakeController.php

@@ -12,6 +12,7 @@
 namespace Symfony\Bundle\MakerBundle\Maker;
 
 use Doctrine\Common\Annotations\Annotation;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 use Symfony\Bundle\MakerBundle\ConsoleStyle;
 use Symfony\Bundle\MakerBundle\DependencyBuilder;
 use Symfony\Bundle\MakerBundle\Generator;
@@ -55,6 +56,7 @@ public function generate(InputInterface $input, ConsoleStyle $io, Generator $gen
             $controllerClassNameDetails->getFullName(),
             'controller/Controller.tpl.php',
             [
+                'parent_class_name' => \method_exists(AbstractController::class, 'getParameter') ? 'AbstractController' : 'Controller',
                 'route_path' => Str::asRoutePath($controllerClassNameDetails->getRelativeNameWithoutSuffix()),
                 'route_name' => Str::asRouteName($controllerClassNameDetails->getRelativeNameWithoutSuffix()),
                 'twig_installed' => $this->isTwigInstalled(),

src/Resources/skeleton/controller/Controller.tpl.php

@@ -2,10 +2,10 @@
 
 namespace <?= $namespace; ?>;
 
+use Symfony\Bundle\FrameworkBundle\Controller\<?= $parent_class_name; ?>;
 use Symfony\Component\Routing\Annotation\Route;
-use Symfony\Bundle\FrameworkBundle\Controller\Controller;
 
-class <?= $class_name; ?> extends Controller
+class <?= $class_name; ?> extends <?= $parent_class_name; ?><?= "\n" ?>
 {
     /**
      * @Route("<?= $route_path ?>", name="<?= $route_name ?>")