implements security on recovering password and redis connector

DependencyInjection/Configuration.php

@@ -85,6 +85,19 @@ class Configuration implements ConfigurationInterface
                         ->end()
                     ->end()
                 ->end() // end of notifications
+                ->arrayNode('redis')
+                    ->children()
+                        ->scalarNode('host')
+                            ->cannotBeEmpty()
+                        ->end()
+                        ->scalarNode('port')
+                            ->defaultValue(6379)
+                        ->end()
+                        ->scalarNode('timeout')
+                            ->defaultValue(1)
+                        ->end()
+                    ->end()
+                ->end()
                 ->arrayNode('widgets')
                     ->canBeEnabled()
                     ->canBeUnset()