MDEV-12179: Per-engine mysql.gtid_slave_pos table

Intermediate commit.

Update multi_source.gtid_ignore_duplicates test to avoid a sporadic
failure following MDEV-12179 functionality.

The test case manually messes with the mysql.gtid_slave_pos table.
Make sure to clean up that at the end of the test, and suppress the
messages from the server about these changes.

mysql-test/suite/multi_source/gtid_ignore_duplicates.result

@@ -65,6 +65,7 @@ include/wait_for_slave_to_start.inc
 set default_master_connection = '';
 connection server_1;
 ALTER TABLE mysql.gtid_slave_pos ENGINE=InnoDB;
+CALL mtr.add_suppression("This change will not take full effect until all SQL threads have been restarted");
 CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
 INSERT INTO t1 VALUES (1);
 BEGIN;
@@ -491,17 +492,21 @@ SET GLOBAL slave_parallel_threads= @old_parallel;
 SET GLOBAL gtid_ignore_duplicates= @old_ignore_duplicates;
 connection server_1;
 DROP TABLE t1;
+ALTER TABLE mysql.gtid_slave_pos ENGINE=MyISAM;
 include/reset_master_slave.inc
 disconnect server_1;
 connection server_2;
 DROP TABLE t1;
+ALTER TABLE mysql.gtid_slave_pos ENGINE=MyISAM;
 include/reset_master_slave.inc
 disconnect server_2;
 connection server_3;
 DROP TABLE t1;
+ALTER TABLE mysql.gtid_slave_pos ENGINE=MyISAM;
 include/reset_master_slave.inc
 disconnect server_3;
 connection server_4;
 DROP TABLE t1;
+ALTER TABLE mysql.gtid_slave_pos ENGINE=MyISAM;
 include/reset_master_slave.inc
 disconnect server_4;

mysql-test/suite/multi_source/gtid_ignore_duplicates.test

@@ -86,6 +86,7 @@ set default_master_connection = '';
 
 --connection server_1
 ALTER TABLE mysql.gtid_slave_pos ENGINE=InnoDB;
+CALL mtr.add_suppression("This change will not take full effect until all SQL threads have been restarted");
 CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
 INSERT INTO t1 VALUES (1);
 BEGIN;
@@ -431,20 +432,24 @@ SET GLOBAL gtid_ignore_duplicates= @old_ignore_duplicates;
 
 --connection server_1
 DROP TABLE t1;
+ALTER TABLE mysql.gtid_slave_pos ENGINE=MyISAM;
 --source include/reset_master_slave.inc
 --disconnect server_1
 
 --connection server_2
 DROP TABLE t1;
+ALTER TABLE mysql.gtid_slave_pos ENGINE=MyISAM;
 --source include/reset_master_slave.inc
 --disconnect server_2
 
 --connection server_3
 DROP TABLE t1;
+ALTER TABLE mysql.gtid_slave_pos ENGINE=MyISAM;
 --source include/reset_master_slave.inc
 --disconnect server_3
 
 --connection server_4
 DROP TABLE t1;
+ALTER TABLE mysql.gtid_slave_pos ENGINE=MyISAM;
 --source include/reset_master_slave.inc
 --disconnect server_4