Each of the tools involved refer to their the overall https configuration as SSL. Even if it's not the protocol which is being used, it's a reasonable choice for the tool name.

Apache

SSLProtocol all -SSLv2 -SSLv3 -TLSv1

SSLCipherSuite ECDHE-RSA-AES1....

Nginx

ssl_protocols TLSv1.1 TLSv1.2;

ssl_ciphers 'ECDHE-RSA-AES....'

HAProxy

ssl-default-bind-ciphers ECDHE-RSA-....