[zendframework/zendframework#4962] Updated code to use ControllerManager

- Original commit adds the alias for ControllerManager; this commit updates code
  to use that alias. Some tests needed to be updated as well.

src/PHPUnit/Controller/AbstractControllerTestCase.php

@@ -462,7 +462,7 @@ protected function getControllerFullClassName()
     {
         $routeMatch           = $this->getApplication()->getMvcEvent()->getRouteMatch();
         $controllerIdentifier = $routeMatch->getParam('controller');
-        $controllerManager    = $this->getApplicationServiceLocator()->get('ControllerLoader');
+        $controllerManager    = $this->getApplicationServiceLocator()->get('ControllerManager');
         $controllerClass      = $controllerManager->get($controllerIdentifier);
         return get_class($controllerClass);
     }