* Change some logging levels
* PlainTextWithBytes - 4xx/5xx this should just be TRACE
* notFoundInternal - the "error" here is too noisy and should be DEBUG
* WorkerPool - Worker pool scaling messages are normal and should be DEBUG
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>