Problem: the test syncs slave by a 'wait_condition' waiting until
table t1 has 5000 rows. However, there is no guarantee that t1
makes it to the slave before the wait_condition.
Fix: sync_slave_with_master just after t1 was created.


mysql-test/suite/rpl/t/rpl_insert.test:
  Added sync_slave_with_master to ensure that table t1 is on
  slave before the slave executes wait_condition.