[SecurityBundle] use access decision constants in config

Author: Tobion

DependencyInjection/MainConfiguration.php

@@ -71,7 +71,10 @@ public function getConfigTreeBuilder()
                 ->arrayNode('access_decision_manager')
                     ->addDefaultsIfNotSet()
                     ->children()
-                        ->enumNode('strategy')->values(array('affirmative', 'consensus', 'unanimous'))->defaultValue(AccessDecisionManager::STRATEGY_AFFIRMATIVE)->end()
+                        ->enumNode('strategy')
+                            ->values(array(AccessDecisionManager::STRATEGY_AFFIRMATIVE, AccessDecisionManager::STRATEGY_CONSENSUS, AccessDecisionManager::STRATEGY_UNANIMOUS))
+                            ->defaultValue(AccessDecisionManager::STRATEGY_AFFIRMATIVE)
+                        ->end()
                         ->booleanNode('allow_if_all_abstain')->defaultFalse()->end()
                         ->booleanNode('allow_if_equal_granted_denied')->defaultTrue()->end()
                     ->end()