mcs247_from_unixtime_funtion fails if local time zone is not GMT

CURRENT_TEST: columnstore/basic.mcs247_from_unixtime_funtion

--- /home/bar/maria-git/s10.6.cs6.MCOL-4414/storage/columnstore/columnstore/mysql-test/columnstore/basic/r/mcs247_from_unixtime_funtion.result	2021-06-02 14:05:58.774068995 +0400

+++ /home/bar/maria-git/s10.6.cs6.MCOL-4414/storage/columnstore/columnstore/mysql-test/columnstore/basic/r/mcs247_from_unixtime_funtion.reject	2021-06-03 12:52:08.799494420 +0400

@@ -14,36 +14,36 @@

 INSERT INTO t1 VALUES(9913, 98765.4321, repeat('q', 5), '09-12-11', '01:08:59');

 SELECT FROM_UNIXTIME(0) FROM t1 LIMIT 1;

 FROM_UNIXTIME(0)

-1970-01-01 00:00:00

+1970-01-01 04:00:00

 SELECT FROM_UNIXTIME(-1) FROM t1 LIMIT 1;

 FROM_UNIXTIME(-1)

 NULL

 SELECT FROM_UNIXTIME(1) FROM t1 LIMIT 1;

 FROM_UNIXTIME(1)

-1970-01-01 00:00:01

+1970-01-01 04:00:01

 SELECT FROM_UNIXTIME(1547432997) FROM t1 LIMIT 1;

 FROM_UNIXTIME(1547432997)

-2019-01-14 02:29:57

+2019-01-14 06:29:57

 SELECT FROM_UNIXTIME('1547432997') FROM t1 LIMIT 1;

 FROM_UNIXTIME('1547432997')

-2019-01-14 02:29:57.000000

+2019-01-14 06:29:57.000000

 SELECT FROM_UNIXTIME(1547432997)+0 FROM t1 LIMIT 1;

 FROM_UNIXTIME(1547432997)+0

-20190114022957

+20190114062957

 SELECT FROM_UNIXTIME(1547432997, '%Y %D %M %h:%i:%s %x') FROM t1 LIMIT 1;

 FROM_UNIXTIME(1547432997, '%Y %D %M %h:%i:%s %x')

-2019 14th January 02:29:57 2019

+2019 14th January 06:29:57 2019

 SELECT FROM_UNIXTIME(2047430881)-8101 FROM t1 LIMIT 1;

 FROM_UNIXTIME(2047430881)-8101

-20341118016700

+20341118056700

 SELECT t1_INT, FROM_UNIXTIME(t1_INT) FROM t1 ORDER BY 1;

 t1_INT	FROM_UNIXTIME(t1_INT)

 -7299	NULL

-103	1970-01-01 00:01:43

-9913	1970-01-01 02:45:13

+103	1970-01-01 04:01:43

+9913	1970-01-01 06:45:13

 SELECT t1_DECIMAL, FROM_UNIXTIME(t1_DECIMAL) FROM t1 ORDER BY 1;

 t1_DECIMAL	FROM_UNIXTIME(t1_DECIMAL)

-111.99000	1970-01-01 00:01:51.99000

-1234.56990	1970-01-01 00:20:34.56990

-98765.43210	1970-01-02 03:26:05.43210

+111.99000	1970-01-01 04:01:51.99000

+1234.56990	1970-01-01 04:20:34.56990

+98765.43210	1970-01-02 07:26:05.43210

 DROP DATABASE mcs247_db;

mysqltest: Result content mismatch

 - saving '/home/bar/maria-git/s10.6.cs6.MCOL-4414/BUILD-DEB/mysql-test/var/log/columnstore/basic.mcs247_from_unixtime_funtion/' to '/home/bar/maria-git/s10.6.cs6.MCOL-4414/BUILD-DEB/mysql-test/var/log/basic.mcs247_from_unixtime_funtion/'