Bug 4599 pt4: Disable RSA weak ephemeral key exchange for OpenSSL-1.1

Bug 4599 pt4: Disable RSA weak ephemeral key exchange for OpenSSL-1.1

From OpenSSL  changeLog:
     Remove support for all 40 and 56 bit ciphers.  This includes all the export
     ciphers who are no longer supported and drops support the ephemeral RSA key
     exchange. The LOW ciphers currently doesn't have any ciphers in it.
     [Kurt Roeckx]

OpenSSL 1.1.0  drops EXPORT ciphers and ephemeral RSA. The ssl_temp_rsa_cb used
here. The OpenSSL manual for this function is:
  https://wiki.openssl.org/index.php/Manual:SSL_CTX_set_tmp_rsa_callback(3)