Pass the client options to the internal cluster initializer method.

This change is useless right now, but when Predis will support Redis cluster
we will need to have access the connection factory object since it will be
required by our future RedisCluster class.

lib/Predis/Options/ClientCluster.php

@@ -46,7 +46,7 @@ class ClientCluster extends Option
         if (is_callable($value)) {
             return $this->checkInstance(call_user_func($value));
         }
-        $initializer = $this->getInitializer($value);
+        $initializer = $this->getInitializer($options, $value);
 
         return $this->checkInstance($initializer());
     }
@@ -54,10 +54,11 @@ class ClientCluster extends Option
     /**
      * Returns an initializer for the specified FQN or type.
      *
-     * @param string $fqnOrType Type of cluster of FQN of a class implementing IConnectionCluster
+     * @param string $fqnOrType Type of cluster of FQN of a class implementing IConnectionCluster.
+     * @param IClientOptions $options Instance of the client options.
      * @return \Closure
      */
-    protected function getInitializer($fqnOrType)
+    protected function getInitializer(IClientOptions $options, $fqnOrType)
     {
         switch ($fqnOrType) {
             case 'predis':