Fix nonexistent module_name in callbacks (#23587)

lib/ansible/plugins/callback/foreman.py

@@ -189,10 +189,8 @@ class CallbackModule(CallbackBase):
 
     def v2_runner_on_ok(self, result):
         res = result._result
-        try:
-            module = res['invocation']['module_name']
-        except KeyError:
-            module = None
+        module = result._task.action
+
         if module == 'setup':
             host = result._host.get_name()
             self.send_facts(host, res)

lib/ansible/plugins/callback/mail.py

@@ -87,7 +87,7 @@ class CallbackModule(CallbackBase):
         sender = '"Ansible: %s" <root>' % host
         attach = res._task.action
         if 'invocation' in res._result:
-            attach = "%s:  %s" % (res._result['invocation']['module_name'], json.dumps(res._result['invocation']['module_args']))
+            attach = "%s:  %s" % (res._task.action, json.dumps(res._result['invocation']['module_args']))
 
         subject = 'Failed: %s' % attach
         body = 'The following task failed for host ' + host + ':\n\n%s\n\n' % attach