test: harden sequential/test-performance

1) This adds a better error logging so we are able to address further
   failures easier.
2) It adds a extra epsilon so the test runs into less issues in case
   the machine is under heavy load.
3) The epsilon in increased if the CPU is under heavy load.
4) The total startup epsilon was reduced due to recent startup time
   improvements.

PR-URL: https://github.com/nodejs/node/pull/22404
Fixes: https://github.com/nodejs/node/issues/19197
Refs: https://github.com/nodejs/reliability/issues/14


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>