Add missing .rdiff file to test galera_sst_xtrabackup-v2_data_dir

for debug build.

mysql-test/suite/galera/r/galera_sst_xtrabackup-v2_data_dir,debug.rdiff

+--- r/galera_sst_xtrabackup-v2_data_dir.result	2018-11-19 12:27:24.795221479 +0200
++++ r/galera_sst_xtrabackup-v2_data_dir.reject	2018-11-19 19:15:38.774008404 +0200
+@@ -260,3 +260,100 @@
+ DROP TABLE t1;
+ COMMIT;
+ SET AUTOCOMMIT=ON;
++Performing State Transfer on a server that has been killed and restarted
++while a DDL was in progress on it
++CREATE TABLE t1 (f1 CHAR(255)) ENGINE=InnoDB;
++SET AUTOCOMMIT=OFF;
++START TRANSACTION;
++INSERT INTO t1 VALUES ('node1_committed_before');
++INSERT INTO t1 VALUES ('node1_committed_before');
++INSERT INTO t1 VALUES ('node1_committed_before');
++INSERT INTO t1 VALUES ('node1_committed_before');
++INSERT INTO t1 VALUES ('node1_committed_before');
++START TRANSACTION;
++INSERT INTO t1 VALUES ('node2_committed_before');
++INSERT INTO t1 VALUES ('node2_committed_before');
++INSERT INTO t1 VALUES ('node2_committed_before');
++INSERT INTO t1 VALUES ('node2_committed_before');
++INSERT INTO t1 VALUES ('node2_committed_before');
++COMMIT;
++SET GLOBAL debug_dbug = 'd,sync.alter_opened_table';
++ALTER TABLE t1 ADD COLUMN f2 INTEGER;
++SET wsrep_sync_wait = 0;
++Killing server ...
++SET AUTOCOMMIT=OFF;
++START TRANSACTION;
++INSERT INTO t1 (f1) VALUES ('node1_committed_during');
++INSERT INTO t1 (f1) VALUES ('node1_committed_during');
++INSERT INTO t1 (f1) VALUES ('node1_committed_during');
++INSERT INTO t1 (f1) VALUES ('node1_committed_during');
++INSERT INTO t1 (f1) VALUES ('node1_committed_during');
++COMMIT;
++START TRANSACTION;
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++SET AUTOCOMMIT=OFF;
++START TRANSACTION;
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++Performing --wsrep-recover ...
++Starting server ...
++Using --wsrep-start-position when starting mysqld ...
++SET AUTOCOMMIT=OFF;
++START TRANSACTION;
++INSERT INTO t1 (f1) VALUES ('node2_committed_after');
++INSERT INTO t1 (f1) VALUES ('node2_committed_after');
++INSERT INTO t1 (f1) VALUES ('node2_committed_after');
++INSERT INTO t1 (f1) VALUES ('node2_committed_after');
++INSERT INTO t1 (f1) VALUES ('node2_committed_after');
++COMMIT;
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++COMMIT;
++SET AUTOCOMMIT=OFF;
++START TRANSACTION;
++INSERT INTO t1 (f1) VALUES ('node1_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_committed_after');
++COMMIT;
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++ROLLBACK;
++SELECT COUNT(*) = 2 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 't1';
++COUNT(*) = 2
++1
++SELECT COUNT(*) = 35 FROM t1;
++COUNT(*) = 35
++1
++SELECT COUNT(*) = 0 FROM (SELECT COUNT(*) AS c, f1 FROM t1 GROUP BY f1 HAVING c NOT IN (5, 10)) AS a1;
++COUNT(*) = 0
++1
++COMMIT;
++SET AUTOCOMMIT=ON;
++SELECT COUNT(*) = 2 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 't1';
++COUNT(*) = 2
++1
++SELECT COUNT(*) = 35 FROM t1;
++COUNT(*) = 35
++1
++SELECT COUNT(*) = 0 FROM (SELECT COUNT(*) AS c, f1 FROM t1 GROUP BY f1 HAVING c NOT IN (5, 10)) AS a1;
++COUNT(*) = 0
++1
++DROP TABLE t1;
++COMMIT;
++SET AUTOCOMMIT=ON;
++SET GLOBAL debug_dbug = $debug_orig;