Make test case for bug#21215repeateble by calling "reset master"

mysql-test/r/mysqldump.result

@@ -2878,13 +2878,14 @@ drop database mysqldump_dbb;
 use test;
 create user mysqltest_1;
 create table t1(a int, b varchar(34));
+reset master;
 mysqldump: Couldn't execute 'FLUSH TABLES': Access denied; you need the RELOAD privilege for this operation (1227)
 mysqldump: Couldn't execute 'FLUSH TABLES': Access denied; you need the RELOAD privilege for this operation (1227)
 grant RELOAD on *.* to mysqltest_1@localhost;
 mysqldump: Couldn't execute 'SHOW MASTER STATUS': Access denied; you need the SUPER,REPLICATION CLIENT privilege for this operation (1227)
 mysqldump: Couldn't execute 'SHOW MASTER STATUS': Access denied; you need the SUPER,REPLICATION CLIENT privilege for this operation (1227)
 grant REPLICATION CLIENT on *.* to mysqltest_1@localhost;
-CHANGE MASTER TO MASTER_LOG_FILE='master-bin.000003', MASTER_LOG_POS=9227;
+CHANGE MASTER TO MASTER_LOG_FILE='master-bin.000001', MASTER_LOG_POS=537;
 CREATE TABLE `t1` (
   `a` int(11) default NULL,
   `b` varchar(34) default NULL

mysql-test/t/mysqldump.test

@@ -1276,6 +1276,9 @@ use test;
 create user mysqltest_1;
 create table t1(a int, b varchar(34));
 
+# To get consistent output, reset the master, starts over from first log
+reset master;
+
 # Execute mysqldump, will fail on FLUSH TABLES
 --error 2
 --exec $MYSQL_DUMP --compact --master-data -u mysqltest_1 test 2>&1