Fixed failing test sql_sequence.replication

mysql-test/suite/sql_sequence/replication.result

@@ -341,6 +341,8 @@ read_only	OFF
 select * from s_db.s1;
 next_value	min_value	max_value	start	increment	cache	cycle	round
 1	1	9223372036854775806	1	1	1000	0	0
+connection master;
+connection slave;
 connection s_normal_3;
 show global variables like 'read_only';
 Variable_name	Value