test: make tls-socket-default-options tests run

Because of a poorly constructed test, only one of the two test vectors
ran.  The test also failed to cover the authentication error that occurs
when the server's certificate is not trusted.

Both issues are fixed.

Fix: https://github.com/nodejs/node/issues/10538
PR-URL: https://github.com/nodejs/node/pull/11005


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>