Bug#47017 rpl_timezone fails on PB-2 with mismatch error

The bug is caused by a race condition between the 
INSERT DELAYED thread and the client thread's FLUSH TABLE.  The 
FLUSH TABLE does not guarantee (as is (wrongly) suggested in the 
test case) that the INSERT DELAYED is ever executed.  The 
execution of the test case will thus not be deterministic.

The fix has been to do a deterministic verification that both
threads are complete by checking the content of the table.

mysql-test/suite/rpl/t/rpl_timezone.test

@@ -179,8 +179,11 @@ insert into t1 values('2008-12-23 19:39:39',1);
 --connection master1
 SET @@session.time_zone='+02:00';
 insert delayed into t1 values ('2008-12-23 19:39:39',2);
-# Forces table t1 to be closed and flushes the query cache.
-# This makes sure that 'delayed insert' is executed before next statement.
+
+# wait for the delayed insert to be executed
+let $wait_condition= SELECT date FROM t1 WHERE a=2;
+--source include/wait_condition.inc
+
 flush table t1;
 flush logs;
 select * from t1;