We don't rewrite them if -s or -p is used

We have now Downstream retry count to be limited to 5 times.  At 6th
failure, we send 503 message to client.

Kudos to h2spec to find this details

Now timing information (completion, request, processing), status code
and request path are listed in the order by completion time.  This
ordering is very convenient to check resource prioritization
validation.