MDEV-21769 : `galera_3nodes.galera_safe_to_bootstrap` fails

Add wait_condition to wait correct cluster configuration.

mysql-test/suite/galera_3nodes/r/galera_safe_to_bootstrap.result

@@ -2,7 +2,8 @@ connection node_1;
 connection node_2;
 connection node_3;
 connection node_1;
-CREATE TABLE t1 (f1 INTEGER) ENGINE=InnoDB;
+CREATE TABLE t1 (f1 INTEGER NOT NULL PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1);
 include/assert_grep.inc [grastate.dat does not have 'safe_to_bootstrap: 0']
 include/assert_grep.inc [grastate.dat does not have 'safe_to_bootstrap: 0']
 include/assert_grep.inc [grastate.dat does not have 'safe_to_bootstrap: 0']
@@ -48,6 +49,7 @@ CALL mtr.add_suppression("Failed to prepare for incremental state transfer");
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `f1` int(11) DEFAULT NULL
+  `f1` int(11) NOT NULL,
+  PRIMARY KEY (`f1`)
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1
 DROP TABLE t1;

mysql-test/suite/galera_3nodes/t/galera_safe_to_bootstrap.cnf

+!include ../galera_3nodes.cnf
+
+[mariadb.1]
+wsrep_debug=1
+
+[mariadb.2]
+wsrep_debug=1
+
+[mariadb.3]
+wsrep_debug=1

mysql-test/suite/galera_3nodes/t/galera_safe_to_bootstrap.test

@@ -2,6 +2,7 @@
 # Test the safe_to_bootstrap in grastate.dat 
 #
 --source include/galera_cluster.inc
+--source include/force_restart.inc
 
 --let $galera_connection_name = node_3
 --let $galera_server_number = 3
@@ -14,7 +15,11 @@
 --source ../galera/include/auto_increment_offset_save.inc
 
 --connection node_1
-CREATE TABLE t1 (f1 INTEGER) ENGINE=InnoDB;
+CREATE TABLE t1 (f1 INTEGER NOT NULL PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1);
+
+--let $wait_condition = SELECT VARIABLE_VALUE = 3 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+--source include/wait_condition.inc
 
 #
 # At start, all grastate.dat files have safe_to_boostrap: 0
@@ -151,10 +156,18 @@ SET SESSION wsrep_on = OFF;
 --source include/start_mysqld.inc
 --source include/wait_until_connected_again.inc
 
+--let $wait_condition = SELECT VARIABLE_VALUE = 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+--source include/wait_condition.inc
+
+
 --connection node_2
 --let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/mysqld.2.expect
 --source include/start_mysqld.inc
 
+--let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+--source include/wait_condition.inc
+
+
 --connection node_3
 --let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/mysqld.3.expect
 --source include/start_mysqld.inc