The patch changes the test case only.
The fix is to replace all 'sleep's with wait_condition. This makes
the test deterministic and also ~300 times faster.


mysql-test/r/lock_multi.result:
  Update result.
mysql-test/t/lock_multi.test:
  A fix for Bug#29049 lock_multi fails in rare case.
  Replace all 'sleep's with wait_condition. This makes
  the test deterministic and also ~300 times faster.