events in perfschema tests: use ON COMPLETION NOT PRESERVE

when the execution is very slow, under valgrind,
the event might manage to fire more than once, making the
test to fail

mysql-test/suite/perfschema/include/program_execution.inc

@@ -32,7 +32,7 @@ SET GLOBAL event_scheduler=ON;
 
 CREATE TABLE table_t(a INT);
 DELIMITER |;
-CREATE EVENT e1 ON SCHEDULE EVERY 2 SECOND DO
+CREATE EVENT e1 ON SCHEDULE EVERY 2 SECOND ON COMPLETION NOT PRESERVE DO
 BEGIN
   INSERT INTO table_t VALUES(1);
 END|

mysql-test/suite/perfschema/r/statement_program_nesting_event_check.result

@@ -145,7 +145,7 @@ Bollywood
 # Event
 SET GLOBAL event_scheduler=ON;
 CREATE TABLE table_t(a INT);
-CREATE EVENT e1 ON SCHEDULE EVERY 2 SECOND DO
+CREATE EVENT e1 ON SCHEDULE EVERY 2 SECOND ON COMPLETION NOT PRESERVE DO
 BEGIN
 INSERT INTO table_t VALUES(1);
 END|
@@ -165,7 +165,7 @@ statement/sql/call_procedure	CALL SampleProc1(30,40,50)	NULL	NULL	0
 statement/sql/call_procedure	CALL SampleProc2("Jwalamukhi",34)	NULL	NULL	0
 statement/sql/call_procedure	CALL SampleProc3()	NULL	NULL	0
 statement/sql/call_procedure	CALL SampleProc4()	NULL	NULL	0
-statement/sql/create_event	CREATE EVENT e1 ON SCHEDULE EVERY 2 SECOND DO
+statement/sql/create_event	CREATE EVENT e1 ON SCHEDULE EVERY 2 SECOND ON COMPLETION NOT PRESERVE DO
 BEGIN
 INSERT INTO table_t VALUES(1);
 END	NULL	NULL	0

mysql-test/suite/perfschema/r/statement_program_non_nested.result

@@ -145,7 +145,7 @@ Bollywood
 # Event
 SET GLOBAL event_scheduler=ON;
 CREATE TABLE table_t(a INT);
-CREATE EVENT e1 ON SCHEDULE EVERY 2 SECOND DO
+CREATE EVENT e1 ON SCHEDULE EVERY 2 SECOND ON COMPLETION NOT PRESERVE DO
 BEGIN
 INSERT INTO table_t VALUES(1);
 END|
@@ -182,7 +182,7 @@ statement/sql/call_procedure	CALL SampleProc1(30,40,50)	stored_programs	NULL	NUL
 statement/sql/call_procedure	CALL SampleProc2("Jwalamukhi",34)	stored_programs	NULL	NULL	NULL	NULL	0
 statement/sql/call_procedure	CALL SampleProc3()	stored_programs	NULL	NULL	NULL	NULL	0
 statement/sql/call_procedure	CALL SampleProc4()	stored_programs	NULL	NULL	NULL	NULL	0
-statement/sql/create_event	CREATE EVENT e1 ON SCHEDULE EVERY 2 SECOND DO
+statement/sql/create_event	CREATE EVENT e1 ON SCHEDULE EVERY 2 SECOND ON COMPLETION NOT PRESERVE DO
 BEGIN
 INSERT INTO table_t VALUES(1);
 END	stored_programs	NULL	NULL	NULL	NULL	0
@@ -553,7 +553,7 @@ Bollywood
 # Event
 SET GLOBAL event_scheduler=ON;
 CREATE TABLE table_t(a INT);
-CREATE EVENT e1 ON SCHEDULE EVERY 2 SECOND DO
+CREATE EVENT e1 ON SCHEDULE EVERY 2 SECOND ON COMPLETION NOT PRESERVE DO
 BEGIN
 INSERT INTO table_t VALUES(1);
 END|