deps: update openssl config

OPENSSL_NO_SSL2 and OPENSSL_NO_WEAK_SSL_CIPHERS are defined in
opensslconf.h

Fixes: https://github.com/nodejs/LTS/issues/85
PR-URL: https://github.com/nodejs/node/pull/5630


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Fedor Indutny <fedor@indutny.com>