Test requires galera debug library.

Jan Lindström · Jan Lindström · commit 2e5681a45062 · 2018-05-08T09:33:48.000+03:00
diff --git a/mysql-test/suite/galera/t/galera#500.test b/mysql-test/suite/galera/t/galera#500.test
@@ -6,6 +6,7 @@
 
 --source include/have_innodb.inc
 --source include/galera_cluster.inc
+--source include/galera_have_debug_sync.inc
 
 # Force node_2 gcomm background thread to terminate via exception.
 --connection node_2
