MDEV-21591 : galera.galera_rsu_add_pk MTR failed: Result content mismatch

Add missing wait condition before we check the end database state.

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

@@ -9,19 +9,19 @@ SET SESSION wsrep_OSU_method = "RSU";
 ALTER TABLE t1 ADD PRIMARY KEY (f1);
 SET SESSION wsrep_OSU_method = "TOI";
 INSERT INTO t1 (f1) SELECT 200000 + (10000 * a1.f1) + (1000 * a2.f1) + (100 * a3.f1) + (10 * a4.f1) + a5.f1 FROM ten AS a1, ten AS a2, ten AS a3, ten AS a4, ten AS a5;
-SELECT COUNT(*) = 300000 FROM t1;
-COUNT(*) = 300000
-1
-SELECT MAX(f1) =  299999 FROM t1;
-MAX(f1) =  299999
-1
+SELECT COUNT(*) AS EXPECT_300000 FROM t1;
+EXPECT_300000
+300000
+SELECT MAX(f1) AS EXPECT_299999 FROM t1;
+EXPECT_299999
+299999
 connection node_1;
-SELECT COUNT(*) = 300000 FROM t1;
-COUNT(*) = 300000
-1
-SELECT MAX(f1) =  299999 FROM t1;
-MAX(f1) =  299999
-1
+SELECT COUNT(*) AS EXPECT_300000 FROM t1;
+EXPECT_300000
+300000
+SELECT MAX(f1) AS EXPECT_299999 FROM t1;
+EXPECT_299999
+299999
 SET SESSION wsrep_OSU_method = "RSU";
 ALTER TABLE t1 ADD PRIMARY KEY (f1);
 SET SESSION wsrep_OSU_method = "TOI";

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

@@ -26,14 +26,20 @@ SET SESSION wsrep_OSU_method = "TOI";
 # Insert values after the ALTER
 INSERT INTO t1 (f1) SELECT 200000 + (10000 * a1.f1) + (1000 * a2.f1) + (100 * a3.f1) + (10 * a4.f1) + a5.f1 FROM ten AS a1, ten AS a2, ten AS a3, ten AS a4, ten AS a5;
 
+--let $wait_condition = SELECT COUNT(*) = 300000 FROM t1;
+--source include/wait_condition.inc
 
-SELECT COUNT(*) = 300000 FROM t1;
-SELECT MAX(f1) =  299999 FROM t1;
+SELECT COUNT(*) AS EXPECT_300000 FROM t1;
+SELECT MAX(f1) AS EXPECT_299999 FROM t1;
 
 --connection node_1
 --reap
-SELECT COUNT(*) = 300000 FROM t1;
-SELECT MAX(f1) =  299999 FROM t1;
+
+--let $wait_condition = SELECT COUNT(*) = 300000 FROM t1;
+--source include/wait_condition.inc
+
+SELECT COUNT(*) AS EXPECT_300000 FROM t1;
+SELECT MAX(f1) AS EXPECT_299999 FROM t1;
 
 SET SESSION wsrep_OSU_method = "RSU";
 ALTER TABLE t1 ADD PRIMARY KEY (f1);