Galera MTR Tests: MW-246 codership/mysql-wsrep#247 Stability fix for galera.mysql-wsrep#247.test

mysql-test/suite/galera/t/mysql-wsrep#247.test

@@ -17,7 +17,7 @@ CREATE TABLE t1 (i int primary key);
 SHOW VARIABLES LIKE 'wsrep_desync';
 
 SET GLOBAL wsrep_desync=0;
-
+--sleep 1
 DROP TABLE t1;
 SHOW VARIABLES LIKE 'wsrep_desync';