It's possible for setting shutdownTimeoutMillisForSignaledShutdown to fail due to a network error, which causes tests to run for an extra 15 seconds due to quiesce mode. Instead, we should set this as a startup parameter whenever the latest binary version is used. We should also stop printing the error when failing to set waitForStepDownOnNonCommandShutdown, since this always fails on the latest binary version and causes confusion in debugging.