Consider using SmartLifecycle for GRpcServerRunner #181
Description
Hi, just wanted to suggest that it would be good to consider using SmartLifecycle interface for GRpcServerRunner instead of CommandLineRunner, DisposableBean as then you could define the order in which beans/services startup and are destroyed. Currently it's hard to do so, if you want to have a graceful shutdown in specific order (ie to start shutting down the grcp server before the downstream services, so that they could respond and finish ongoing requests)