crypto: emulate OpenSSL 1.0 ticket scheme in 1.1

OpenSSL 1.0.x used a 48-byte ticket key, but OpenSSL 1.1.x made it
larger by using a larger HMAC-SHA256 key and using AES-256-CBC to
encrypt. However, Node's public API exposes the 48-byte key. Implement
the ticket key callback to restore the OpenSSL 1.0.x behavior.

PR-URL: https://github.com/nodejs/node/pull/16130


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Rod Vagg <rod@vagg.org>