 Fix unintentional TLS downgrade (#1134).
 Fix unintentional TLS downgrade (#1134).

Change the logic used to determine when a connection attempt is failing
due to a lack of support for TLS 1.2+ in yaSSL-based MySQL Server so
that a downgrade no longer occurs if the user has explicitly configured
supported TLS Version(s) in the connection string.

Signed-off-by: Andrew Nagel <2df2c2f7b3642fb1e6b4298278c5d999a348a29b@gmail.com>
Signed-off-by: Andrew Nagel <a92f53e7c6338dddd7c357d08334d550714a1182@dot.gov>

Co-authored-by: Andrew Nagel <a92f53e7c6338dddd7c357d08334d550714a1182@dot.gov>
mysql-net/MySqlConnector,mysql-net/MySqlConnector