in the embedded result we don't have 'log_slave_updates OFF' line
as replication is disabled in the embedded server.
As we don't need to check for log_slave_updates variable in this
test, we can not to SHOW it at all


mysql-test/r/flush2.result:
  result fixed
mysql-test/t/flush2.test:
  here we only need to check for log_bin% variables