* Find OpenSSL version
* Create and update various config files
* Update logic to use new version constraints
* SSL_OPTIONS_HASHES_NEW and SSL_OPTIONS_HASHES_MEDIUM were just being used for testing, and maintaining them is becoming untenable, so remove them.
* if we don't know the openssl version, we can't turn off session tickets
* add unit test for _get_openssl_version
* add unit tests
* placate lint
* Fix docs and tests and clean up code
* use python correctly
* update changelog
* Lint
* make comment a comment
Following discussions in #7298.
This PR moves the three Nginx TLS configuration files into a specific folder, tls_configs, update the MANIFEST to include this folder and its content into the certbot-nginx package, and update tests accordingly.
* Move tls configuration files in a specific folder
* Move new file
