MDEV-7611: create multi_source.mariadb-dump_slave

Create a Multi-Source Replication test
for these `mariadb-dump --dump-slave` bugs:
* MDEV-7611 (not fixed as of this commit)
* MDEV-5624 (fixed a long time ago)

Reviewed-by: Brandon Nesterenko <brandon.nesterenko@mariadb.com>

Author: ParadoxV5

mysql-test/suite/multi_source/mariadb-dump_slave.result

@@ -0,0 +1,56 @@
+connect    active_master, 127.0.0.1, root, , , $SERVER_MYPORT_2;
+connect  inactive_master, 127.0.0.1, root, , , $SERVER_MYPORT_3;
+connect            slave, 127.0.0.1, root, , , $SERVER_MYPORT_1;
+CHANGE MASTER TO
+master_host='127.0.0.1', master_port=MYPORT_2, master_user='root';
+START SLAVE SQL_THREAD;
+CHANGE MASTER 'inactive' TO
+master_host='127.0.0.1', master_port=MYPORT_3;
+include/wait_for_slave_sql_to_start.inc
+# Control State
+Connection_name = ''
+Connection_name = 'inactive'
+Slave_IO_Running = 'No'
+Slave_IO_Running = 'No'
+Slave_SQL_Running = 'Yes'
+Slave_SQL_Running = 'No'
+# Basic
+$MYSQL_DUMP --compact --dump-slave --include-master-host-port test
+/*M!999999\- enable the sandbox mode */ 
+CHANGE MASTER '' TO MASTER_HOST='127.0.0.1', MASTER_PORT=MYPORT_2, MASTER_LOG_FILE='', MASTER_LOG_POS=4;
+CHANGE MASTER 'inactive' TO MASTER_HOST='127.0.0.1', MASTER_PORT=MYPORT_3, MASTER_LOG_FILE='', MASTER_LOG_POS=0;
+
+-- SET GLOBAL gtid_slave_pos='';
+# MDEV-7611 mysqldump --dump-slave always starts stopped slave
+$MYSQL_DUMP --compact --dump-slave test
+/*M!999999\- enable the sandbox mode */ 
+CHANGE MASTER '' TO MASTER_LOG_FILE='', MASTER_LOG_POS=4;
+CHANGE MASTER 'inactive' TO MASTER_LOG_FILE='', MASTER_LOG_POS=0;
+
+-- SET GLOBAL gtid_slave_pos='';
+include/wait_for_slave_sql_to_start.inc
+Connection_name = ''
+Connection_name = 'inactive'
+Slave_IO_Running = 'No'
+Slave_IO_Running = 'No'
+Slave_SQL_Running = 'Yes'
+Slave_SQL_Running = 'No'
+# MDEV-5624 mysqldump --dump-slave option does not restart the replication if the dump has failed
+$MYSQL_DUMP --compact --dump-slave no_such_db
+/*M!999999\- enable the sandbox mode */ 
+CHANGE MASTER '' TO MASTER_LOG_FILE='', MASTER_LOG_POS=4;
+CHANGE MASTER 'inactive' TO MASTER_LOG_FILE='', MASTER_LOG_POS=0;
+
+include/wait_for_slave_sql_to_start.inc
+Connection_name = ''
+Connection_name = 'inactive'
+Slave_IO_Running = 'No'
+Slave_IO_Running = 'No'
+Slave_SQL_Running = 'Yes'
+Slave_SQL_Running = 'No'
+# Cleanup
+STOP SLAVE SQL_THREAD;
+disconnect active_master;
+disconnect inactive_master;
+include/wait_for_slave_sql_to_stop.inc
+disconnect slave;

mysql-test/suite/multi_source/mariadb-dump_slave.test

@@ -0,0 +1,55 @@
+# `mariadb-dump --dump-slave` multi-source interactions
+# (see `main.rpl_mysqldump_slave` for general testing with single-source)
+
+--source include/have_log_bin.inc
+--let $status_items= Connection_name, Slave_IO_Running, Slave_SQL_Running
+--let $all_slaves_status= 1
+
+# $MYSQL_DUMP dumps the $SERVER_MYPORT_1 server
+--connect (  active_master, 127.0.0.1, root, , , $SERVER_MYPORT_2)
+--connect (inactive_master, 127.0.0.1, root, , , $SERVER_MYPORT_3)
+--connect (          slave, 127.0.0.1, root, , , $SERVER_MYPORT_1)
+
+--replace_result $SERVER_MYPORT_2 MYPORT_2
+eval CHANGE MASTER TO
+  master_host='127.0.0.1', master_port=$SERVER_MYPORT_2, master_user='root';
+START SLAVE SQL_THREAD;
+--replace_result $SERVER_MYPORT_3 MYPORT_3
+eval CHANGE MASTER 'inactive' TO
+  master_host='127.0.0.1', master_port=$SERVER_MYPORT_3;
+# wait for the active default '' connection only
+--source include/wait_for_slave_sql_to_start.inc
+
+
+--echo # Control State
+--source include/show_slave_status.inc
+
+--echo # Basic
+--echo \$MYSQL_DUMP --compact --dump-slave --include-master-host-port test
+--replace_result $SERVER_MYPORT_2 MYPORT_2 $SERVER_MYPORT_3 MYPORT_3
+--exec  $MYSQL_DUMP --compact --dump-slave --include-master-host-port test
+
+
+# The 'inactive' connection should remain stopped
+# while the active '' connection should restart.
+
+--echo # MDEV-7611 mysqldump --dump-slave always starts stopped slave
+--echo \$MYSQL_DUMP --compact --dump-slave test
+--exec  $MYSQL_DUMP --compact --dump-slave test
+--source include/wait_for_slave_sql_to_start.inc
+--source include/show_slave_status.inc
+
+--echo # MDEV-5624 mysqldump --dump-slave option does not restart the replication if the dump has failed
+--echo \$MYSQL_DUMP --compact --dump-slave no_such_db
+--error 2
+--exec  $MYSQL_DUMP --compact --dump-slave no_such_db
+--source include/wait_for_slave_sql_to_start.inc
+--source include/show_slave_status.inc
+
+
+--echo # Cleanup
+STOP SLAVE SQL_THREAD;
+--disconnect active_master
+--disconnect inactive_master
+--source include/wait_for_slave_sql_to_stop.inc
+--disconnect slave