Separated the force option into it's own boolean key

Author: kierate

DependencyInjection/Configuration.php

@@ -59,16 +59,12 @@ public function getConfigTreeBuilder()
                 ->arrayNode('param_fetcher_listener')
                     ->beforeNormalization()
                         ->ifString()
-                        ->then(function ($v) { return array('enabled' => $v); })
+                        ->then(function ($v) { return array('enabled' => in_array($v, array('force', 'true')), 'force' => 'force' === $v); })
                     ->end()
                     ->canBeEnabled()
                     ->children()
-                        ->scalarNode('enabled')->defaultFalse()
-                            ->validate()
-                                ->ifNotInArray(Configuration::$forceOptionValues)
-                                ->thenInvalid('The param_fetcher_listener option does not support %s. Please choose one of '.json_encode(Configuration::$forceOptionValues))
-                            ->end()
-                        ->end()
+                        ->booleanNode('enabled')->defaultFalse()->end()
+                        ->scalarNode('force')->defaultFalse()->end()
                         ->scalarNode('service')->defaultNull()->end()
                     ->end()
                 ->end()

DependencyInjection/FOSRestExtension.php

@@ -192,7 +192,7 @@ private function loadParamFetcherListener(array $config, XmlFileLoader $loader,
                 $service->clearTag('kernel.event_listener');
             }
 
-            if ('force' === $config['param_fetcher_listener']['enabled']) {
+            if ($config['param_fetcher_listener']['force']) {
                 $container->setParameter('fos_rest.param_fetcher_listener.set_params_as_attributes', true);
             }
         }