Embedded and server thread pool defaults should be the same

Embedded:

      DEFAULT_THREAD_COUNT.put(REMOTE_COMMAND_EXECUTOR, 200);
      DEFAULT_QUEUE_SIZE.put(REMOTE_COMMAND_EXECUTOR, 0);

Server:

    REMOTE_COMMAND("remote-command", 25, 25, 100000, 60000),

Using a huge queue is not ok for the remote thread pool, but I missed it before because I assumed the server was using the KnownComponentNames defaults. We should unify the thread pool defaults in another class with a more topical name and remove KnownComponentNames.