tls: disable TLS v1.0 and v1.1 by default

Refs: https://blog.mozilla.org/security/2018/10/15/removing-old-versions-of-tls/

PR-URL: https://github.com/nodejs/node/pull/23814


Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rod Vagg <rod@vagg.org>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>