make partition_mgm test deterministic wrt results of ls

mysql-test/t/partition_mgm.test:
  make partition_mgm test deterministic

mysql-test/t/partition_mgm.test

@@ -24,11 +24,15 @@ PARTITION BY HASH(CAST(YEAR(f_date) AS SIGNED INTEGER)) PARTITIONS 2;
 SHOW CREATE TABLE t1;
 
 --replace_result $MYSQLTEST_VARDIR "hello"
---exec ls $MYSQLTEST_VARDIR/master-data/test/t1*
+--exec ls $MYSQLTEST_VARDIR/master-data/test/t1#*
+--replace_result $MYSQLTEST_VARDIR "hello"
+--exec ls $MYSQLTEST_VARDIR/master-data/test/t1.*
 ALTER TABLE t1 COALESCE PARTITION 1;
 SHOW CREATE TABLE t1;
 --replace_result $MYSQLTEST_VARDIR "hello"
---exec ls $MYSQLTEST_VARDIR/master-data/test/t1*
+--exec ls $MYSQLTEST_VARDIR/master-data/test/t1#*
+--replace_result $MYSQLTEST_VARDIR "hello"
+--exec ls $MYSQLTEST_VARDIR/master-data/test/t1.*
 drop table t1;
 #
 # Bug 20767: REORGANIZE partition crashes