Issue 49395 - Set the default TLS version min to TLS1.2
Description: On fedora the NSS default minimum is still TLS1.0,
we need to force the default min to be TLS1.2 unless
explicity set using sslVersionMin in cn=encryption,cn=config
entry.
This is also to comply with our healthcheck tool that
complains about TLS1.0 min setting.
relates: https://pagure.io/389-ds-base/issue/49395
Reviewed by: firstyear (Thanks!)