For `actionable` cb plugin also hide ok for itemized results

The purpose of the `actionable` callback plugin is to hide uninteresting
results.

Also hide the ok results when the task was itemized.

lib/ansible/plugins/callback/actionable.py

@@ -50,8 +50,6 @@ class CallbackModule(CallbackModule_default):
         if result._result.get('changed', False):
             self.display_task_banner()
             self.super_ref.v2_runner_on_ok(result)
-        else:
-            pass
 
     def v2_runner_on_unreachable(self, result):
         self.display_task_banner()
@@ -64,6 +62,7 @@ class CallbackModule(CallbackModule_default):
         pass
 
     def v2_runner_item_on_ok(self, result):
+        if result._result.get('changed', False):
             self.display_task_banner()
             self.super_ref.v2_runner_item_on_ok(result)