Make run_node_until_exit take a future (#7318)

The function takes a closure that resolved before to a `TaskManager`,
now it resolves to a `Future` which output is a `TaskManager`. This is
required for node setups that are async.

substrate/bin/node-template/node/src/command.rs

@@ -126,9 +126,11 @@ pub fn run() -> sc_cli::Result<()> {
 		},
 		None => {
 			let runner = cli.create_runner(&cli.run)?;
-			runner.run_node_until_exit(|config| match config.role {
-				Role::Light => service::new_light(config),
-				_ => service::new_full(config),
+			runner.run_node_until_exit(|config| async move {
+				match config.role {
+					Role::Light => service::new_light(config),
+					_ => service::new_full(config),
+				}
 			})
 		}
 	}