upgrade php-cs-fixer to v2.12

Author: mattmelling

modules/swagger-codegen/src/main/resources/php/.php_cs

@@ -1,18 +1,16 @@
 <?php
 
-return Symfony\CS\Config::create()
-    ->level(Symfony\CS\FixerInterface::PSR2_LEVEL)
+return PhpCsFixer\Config::create()
     ->setUsingCache(true)
-    ->fixers(
-        [
-            'ordered_use',
-            'phpdoc_order',
-            'short_array_syntax',
-            'strict',
-            'strict_param'
-        ]
-    )
-    ->finder(
-        Symfony\CS\Finder\DefaultFinder::create()
-            ->in(__DIR__)
+    ->setRules([
+        '@PSR2' => true,
+        'ordered_imports' => true,
+        'phpdoc_order' => true,
+        'array_syntax' => [ 'syntax' => 'short' ],
+        'strict_comparison' => true,
+        'strict_param' => true
+    ])
+    ->setFinder(
+        PhpCsFixer\Finder::create()
+        ->in(__DIR__)
     );

modules/swagger-codegen/src/main/resources/php/composer.mustache

@@ -28,7 +28,7 @@
     "require-dev": {
         "phpunit/phpunit": "^4.8",
         "squizlabs/php_codesniffer": "~2.6",
-        "friendsofphp/php-cs-fixer": "~1.12"
+        "friendsofphp/php-cs-fixer": "~2.12"
     },
     "autoload": {
         "psr-4": { "{{escapedInvokerPackage}}\\" : "{{srcBasePath}}/" }