Update sample st2 config file
Ran "make configgen" to update the sample st2 config file.
@@ -191,6 +191,8 @@ jitter_interval = 0.1
insecure = False
# Username for authentication.
keystone_username = None
+# Enable results tracking and disable callbacks.
+enable_polling = False
# OpenStack project scope.
keystone_project_name = None
# Password for authentication.
