test: rewrite ocsp test to run in parallel

Run tests in parallel and use common.mustCall() and mustNotCall()
instead of process.exit() to ensure test assertions are run.

PR-URL: https://github.com/nodejs/node/pull/26460


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>