Merge "Fix to show cli subcommand help message"
diff --git a/tempest/cmd/main.py b/tempest/cmd/main.py
index 577df9b..acd97a8 100644
--- a/tempest/cmd/main.py
+++ b/tempest/cmd/main.py
@@ -28,6 +28,7 @@
             description='Tempest cli application',
             version=version.VersionInfo('tempest').version_string(),
             command_manager=commandmanager.CommandManager('tempest.cm'),
+            deferred_help=True,
             )
 
     def initialize_app(self, argv):