MDEV-21492 : Galera test sporadic failure on galera.galera_events2

Add wait condition for event creation.

mysql-test/suite/galera/disabled.def

@@ -26,13 +26,13 @@ galera_autoinc_sst_mariabackup : Known issue, may require porting MDEV-17458 fro
 galera_binlog_rows_query_log_events: MariaDB does not support binlog_rows_query_log_events
 galera_binlog_stmt_autoinc : MDEV-19959 Galera test failure on galera_binlog_stmt_autoinc	
 galera_binlog_stmt_autoinc: MDEV-19959 Galera test failure on galera_binlog_stmt_autoinc
-galera_events2 : MDEV-21492 galera.galera_events2
 galera_flush :  MariaDB does not have global.thread_statistics
 galera_gcache_recover_manytrx : MDEV-18834 Galera test failure
 galera_ist_mariabackup : MDEV-18829 test leaves port open
 galera_ist_progress : MDEV-15236 fails when trying to read transfer status
 galera_load_data : MDEV-19968 galera.galera_load_data
 galera_migrate : MariaDB does not support START SLAVE USER
+galera_parallel_autoinc_largetrx : MDEV-20916 galera.galera_parallel_autoinc_largetrx
 galera_parallel_simple : MDEV-20318 galera.galera_parallel_simple fails	
 galera_shutdown_nonprim : MDEV-21493 galera.galera_shutdown_nonprim
 galera_ssl_upgrade : MDEV-19950 Galera test failure on galera_ssl_upgrade
@@ -42,6 +42,7 @@ galera_var_innodb_disallow_writes : MDEV-20928 galera.galera_var_innodb_disallow
 galera_var_node_address : MDEV-20485 Galera test failure
 galera_var_notify_cmd : MDEV-21488 galera.galera_var_notify_cmd
 galera_wan : MDEV-17259 Test failure on galera.galera_wan
+mysql-wsrep#33 : MDEV-21420 galera.mysql-wsrep#33
 partition : MDEV-19958 Galera test failure on galera.partition
 query_cache: MDEV-15805 Test failure on galera.query_cache
 sql_log_bin : MDEV-21491 galera.sql_log_bin

mysql-test/suite/galera/r/galera_events2.result

@@ -14,6 +14,7 @@ SELECT EVENT_CATALOG, EVENT_SCHEMA, EVENT_NAME, DEFINER, EVENT_BODY, EVENT_DEFIN
 EVENT_CATALOG	EVENT_SCHEMA	EVENT_NAME	DEFINER	EVENT_BODY	EVENT_DEFINITION	EVENT_TYPE	EXECUTE_AT	INTERVAL_VALUE	INTERVAL_FIELD	STATUS	ON_COMPLETION	EVENT_COMMENT
 def	test	event_2	root@localhost	SQL	INSERT INTO event_table VALUES (1)	RECURRING	NULL	1	SECOND	ENABLED	NOT PRESERVE	
 connection node_2;
+set global wsrep_sync_wait=15;
 # node_2 event should be there
 SELECT EVENT_CATALOG, EVENT_SCHEMA, EVENT_NAME, DEFINER, EVENT_BODY, EVENT_DEFINITION, EVENT_TYPE, EXECUTE_AT, INTERVAL_VALUE, INTERVAL_FIELD, STATUS,ON_COMPLETION, EVENT_COMMENT FROM INFORMATION_SCHEMA.EVENTS WHERE EVENT_NAME='event_2';
 EVENT_CATALOG	EVENT_SCHEMA	EVENT_NAME	DEFINER	EVENT_BODY	EVENT_DEFINITION	EVENT_TYPE	EXECUTE_AT	INTERVAL_VALUE	INTERVAL_FIELD	STATUS	ON_COMPLETION	EVENT_COMMENT

mysql-test/suite/galera/t/galera_events2.test

@@ -23,6 +23,7 @@ DO
 SELECT EVENT_CATALOG, EVENT_SCHEMA, EVENT_NAME, DEFINER, EVENT_BODY, EVENT_DEFINITION, EVENT_TYPE, EXECUTE_AT, INTERVAL_VALUE, INTERVAL_FIELD, STATUS,ON_COMPLETION, EVENT_COMMENT FROM INFORMATION_SCHEMA.EVENTS WHERE EVENT_NAME='event_2';
 
 --connection node_2
+set global wsrep_sync_wait=15;
 --echo # node_2 event should be there
 SELECT EVENT_CATALOG, EVENT_SCHEMA, EVENT_NAME, DEFINER, EVENT_BODY, EVENT_DEFINITION, EVENT_TYPE, EXECUTE_AT, INTERVAL_VALUE, INTERVAL_FIELD, STATUS,ON_COMPLETION, EVENT_COMMENT FROM INFORMATION_SCHEMA.EVENTS WHERE EVENT_NAME='event_2';
 
@@ -66,6 +67,9 @@ ALTER EVENT one_event ON SCHEDULE EVERY 10 SECOND;
 SELECT EVENT_CATALOG, EVENT_SCHEMA, EVENT_NAME, DEFINER, EVENT_BODY, EVENT_DEFINITION, EVENT_TYPE, EXECUTE_AT, INTERVAL_VALUE, INTERVAL_FIELD, STATUS,ON_COMPLETION, EVENT_COMMENT FROM INFORMATION_SCHEMA.EVENTS WHERE EVENT_NAME='one_event';
 
 --connection node_2
+--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.EVENTS WHERE EVENT_NAME='one_event';
+--source include/wait_condition.inc
+
 use events_test;
 --echo "The definer should be ev_test@localhost"
 SELECT EVENT_CATALOG, EVENT_SCHEMA, EVENT_NAME, DEFINER, EVENT_BODY, EVENT_DEFINITION, EVENT_TYPE, EXECUTE_AT, INTERVAL_VALUE, INTERVAL_FIELD, STATUS,ON_COMPLETION, EVENT_COMMENT FROM INFORMATION_SCHEMA.EVENTS WHERE EVENT_NAME='one_event';