Galera test adjustments.

Changes to be committed:
	modified:   ../galera/disabled.def
	modified:   ../galera/r/GAL-419.result
	modified:   ../galera/t/GAL-419.test
	modified:   ../galera/t/galera_ist_innodb_flush_logs.test
	modified:   ../galera/t/galera_ist_mariabackup_innodb_flush_logs.test

mysql-test/suite/galera/disabled.def

@@ -10,6 +10,7 @@
 #
 ##############################################################################
 
+MW-286 : MDEV-19992 Galera test failure on MW-286
 MW-328A : MDEV-17847 Galera test failure on MW-328[A|B|C]
 MW-328B : MDEV-17847 Galera test failure on MW-328[A|B|C]
 MW-328C : MDEV-17847 Galera test failure on MW-328[A|B|C]

mysql-test/suite/galera/r/GAL-419.result

+call mtr.add_suppression("WSREP: It may not be safe to bootstrap the cluster from this node.*");
+call mtr.add_suppression("Aborting");
+connection node_2;
 SET SESSION wsrep_sync_wait = 0;
 Killing server ...
+connection node_1;
 SET SESSION wsrep_sync_wait = 0;
 Killing server ...
+connection node_1;
+connection node_2;

mysql-test/suite/galera/t/GAL-419.test

@@ -5,6 +5,9 @@
 --source include/galera_cluster.inc
 --source include/big_test.inc
 
+call mtr.add_suppression("WSREP: It may not be safe to bootstrap the cluster from this node.*");
+call mtr.add_suppression("Aborting");
+
 --connection node_2
 SET SESSION wsrep_sync_wait = 0;
 --source include/kill_galera.inc

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

@@ -6,7 +6,7 @@
 
 --source include/big_test.inc
 --source include/galera_cluster.inc
---source include/have_innodb.inc
+--source include/have_xtrabackup.inc
 
 --source suite/galera/include/galera_st_kill_slave.inc
 --source suite/galera/include/galera_st_kill_slave_ddl.inc

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

@@ -6,7 +6,7 @@
 
 --source include/big_test.inc
 --source include/galera_cluster.inc
---source include/have_innodb.inc
+--source include/have_xtrabackup.inc
 
 --source suite/galera/include/galera_st_kill_slave.inc
 --source suite/galera/include/galera_st_kill_slave_ddl.inc