Include command type in the timeout message (#3167)

It is very frustrating to get a stacktrace which does not indicate which command has failed when using async/reactive clients.

Author: arturaz

src/main/java/io/lettuce/core/protocol/CommandExpiryWriter.java

@@ -179,8 +179,8 @@ private void potentiallyExpire(RedisCommand<?, ?, ?> command, ScheduledExecutorS
 
         Timeout commandTimeout = timer.newTimeout(t -> {
             if (!command.isDone()) {
-                executors.submit(() -> command.completeExceptionally(
-                        ExceptionFactory.createTimeoutException(Duration.ofNanos(timeUnit.toNanos(timeout)))));
+                executors.submit(() -> command.completeExceptionally(ExceptionFactory
+                        .createTimeoutException(command.getType().toString(), Duration.ofNanos(timeUnit.toNanos(timeout)))));
 
             }
         }, timeout, timeUnit);