- Turn off verification of peer if both ca_path and ca_file is null
   i.e from only passing --ssl-key=<client_key> and --ssl-cert=<client_cert>
   to the mysql utility programs.
   The server will authenticate the client accoring to GRANT tables
   but the client won't authenticate the server 


mysql-test/r/openssl_1.result:
  Update result file
mysql-test/t/openssl_1.test:
  Test that it's possible to connect with --ssl-ca set to /dev/null
vio/viosslfactories.c:
  Turn off verification of peer if both ca_file and ca_path is NULL