Only use TLS1.2 when it's available
Only use TLS1.2 when it's available

Reviewed-by: Ben Laurie <73675debcd8a436be48ec22211dcf44fe0df0a64@openssl.org>

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl