You're missing heat::notification_driver in here. Reported by: rhn-support-dhill https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/10/html/deployment_recommendations_for_specific_red_hat_openstack_platform_services/index#annotations:dfde3f4f-859f-47e5-816a-97b71b6c8584
OSP was EOL on Dec 16, 2019 and the process has changed in later versions: https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/16.1/html/deployment_recommendations_for_specific_red_hat_openstack_platform_services/config-recommend-telemetry_config-recommend-telemetry#config_telemetry-small-overcloud_config-recommend-telemetry