Added query rule to route 'SELECT @rpl_semi_sync_slave=?' and 'SET @r…

…pl_semi_sync_slave=1' queries to writer HG and disable multiplexing.

test/tap/tests/test_binlog_fast_forward-t.cpp

@@ -153,6 +153,16 @@ int main(int argc, char** argv) {
 				  __FILE__, __LINE__, mysql_error(mysqladmin));
 		return exit_status();
 	}
+
+	const std::vector<std::string> query_rules = { "INSERT OR IGNORE INTO mysql_query_rules (rule_id,active,match_digest,destination_hostgroup,multiplex,apply) VALUES\
+		(-1,1,'^(SELECT @rpl_semi_sync_slave=\\?.*|SET @rpl_semi_sync_slave=\\?.*)$',0,0,1)", 
+		"LOAD MYSQL QUERY RULES TO RUNTIME" };
+
+	for (const auto& query : query_rules) {
+		diag("Running on Admin: %s", query.c_str());
+		MYSQL_QUERY(mysqladmin, query.c_str());
+	}
+
 	// we now test various combination
 	setup_replication(11, false, false, repl_queries_set1);
 	setup_replication(12, true,  false, repl_queries_set1);