This check has to happen via REST API calls rather than by calling stack.resource_by_refid in the validate method. I'm not sure what you could set on the nova server to store the user_data_format - maybe you could set/get a nova meta key/value
This check has to happen via REST API calls rather than by calling stack.resource_ by_refid in the validate method. I'm not sure what you could set on the nova server to store the user_data_format - maybe you could set/get a nova meta key/value