MDEV-16272 rpl.rpl_semisync_ali_issues failed in buildbot with wrong result

Since start slave does wait for slave to start , Add a wait condition to
confirm that slave is started.

mysql-test/suite/rpl/r/rpl_semisync_ali_issues.result

@@ -29,6 +29,7 @@ connection slave;
 stop slave;
 set global rpl_semi_sync_slave_enabled = 1;
 start slave;
+include/wait_for_slave_to_start.inc
 show status like 'rpl_semi_sync_slave%';
 Variable_name	Value
 Rpl_semi_sync_slave_send_ack	0

mysql-test/suite/rpl/t/rpl_semisync_ali_issues.test

@@ -31,6 +31,7 @@ echo [ enable semi-sync on slave ];
 stop slave;
 set global rpl_semi_sync_slave_enabled = 1;
 start slave;
+--source include/wait_for_slave_to_start.inc
 show status like 'rpl_semi_sync_slave%';
 
 connection master;