MDEV-20051 fixup: Correct galera.galera_defaults result

For some reason, the test was never adjusted for
commit e6a50e41.

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

@@ -3,7 +3,7 @@ connection node_1;
 # Correct Galera library found
 SELECT COUNT(*) `expect 49` FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME LIKE 'wsrep_%';
 expect 49
-49
+50
 SELECT VARIABLE_NAME, VARIABLE_VALUE
 FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
 WHERE VARIABLE_NAME LIKE 'wsrep_%'
@@ -57,6 +57,7 @@ WSREP_SST_AUTH
 WSREP_SST_DONOR	
 WSREP_SST_DONOR_REJECTS_QUERIES	OFF
 WSREP_SST_METHOD	rsync
+WSREP_STRICT_DDL	OFF
 WSREP_SYNC_WAIT	15
 WSREP_TRX_FRAGMENT_SIZE	0
 WSREP_TRX_FRAGMENT_UNIT	bytes