MDEV-5431 Test main.ctype_latin2 fails in buildbot

Fixing include/ctype_datetime.inc not to depend on the current time zone.

mysql-test/include/ctype_datetime.inc

@@ -2,6 +2,7 @@
 --echo # Bug#32390 Character sets: casting utf32 to/from date doesn't work
 --echo #
 CREATE TABLE t1 AS SELECT repeat('a',20) AS s1 LIMIT 0;
+SET time_zone=_latin1'+03:00';
 SET timestamp=1216359724;
 INSERT INTO t1 VALUES (current_date);
 INSERT INTO t1 VALUES (current_time);
@@ -9,6 +10,7 @@ INSERT INTO t1 VALUES (current_timestamp);
 SELECT s1, hex(s1) FROM t1;
 DROP TABLE t1;
 SET timestamp=0;
+SET time_zone=default;
 
 --echo #
 --echo # MDEV-5298 Illegal mix of collations on timestamp

mysql-test/r/ctype_latin2.result

@@ -564,6 +564,7 @@ DFDFBABBBE
 # Bug#32390 Character sets: casting utf32 to/from date doesn't work
 #
 CREATE TABLE t1 AS SELECT repeat('a',20) AS s1 LIMIT 0;
+SET time_zone=_latin1'+03:00';
 SET timestamp=1216359724;
 INSERT INTO t1 VALUES (current_date);
 INSERT INTO t1 VALUES (current_time);
@@ -571,10 +572,11 @@ INSERT INTO t1 VALUES (current_timestamp);
 SELECT s1, hex(s1) FROM t1;
 s1	hex(s1)
 2008-07-18	323030382D30372D3138
-09:42:04	30393A34323A3034
-2008-07-18 09:42:04	323030382D30372D31382030393A34323A3034
+08:42:04	30383A34323A3034
+2008-07-18 08:42:04	323030382D30372D31382030383A34323A3034
 DROP TABLE t1;
 SET timestamp=0;
+SET time_zone=default;
 #
 # MDEV-5298 Illegal mix of collations on timestamp
 #

mysql-test/r/ctype_ucs.result

@@ -4873,6 +4873,7 @@ SET collation_connection=ucs2_general_ci;
 # Bug#32390 Character sets: casting utf32 to/from date doesn't work
 #
 CREATE TABLE t1 AS SELECT repeat('a',20) AS s1 LIMIT 0;
+SET time_zone=_latin1'+03:00';
 SET timestamp=1216359724;
 INSERT INTO t1 VALUES (current_date);
 INSERT INTO t1 VALUES (current_time);
@@ -4884,6 +4885,7 @@ s1	hex(s1)
 2008-07-18 08:42:04	0032003000300038002D00300037002D00310038002000300038003A00340032003A00300034
 DROP TABLE t1;
 SET timestamp=0;
+SET time_zone=default;
 #
 # MDEV-5298 Illegal mix of collations on timestamp
 #

mysql-test/r/ctype_utf16.result

@@ -1202,6 +1202,7 @@ SET collation_connection=utf16_general_ci;
 # Bug#32390 Character sets: casting utf32 to/from date doesn't work
 #
 CREATE TABLE t1 AS SELECT repeat('a',20) AS s1 LIMIT 0;
+SET time_zone=_latin1'+03:00';
 SET timestamp=1216359724;
 INSERT INTO t1 VALUES (current_date);
 INSERT INTO t1 VALUES (current_time);
@@ -1213,6 +1214,7 @@ s1	hex(s1)
 2008-07-18 08:42:04	0032003000300038002D00300037002D00310038002000300038003A00340032003A00300034
 DROP TABLE t1;
 SET timestamp=0;
+SET time_zone=default;
 #
 # MDEV-5298 Illegal mix of collations on timestamp
 #

mysql-test/r/ctype_utf16le.result

@@ -1473,6 +1473,7 @@ drop table t1;
 # Bug#32390 Character sets: casting utf32 to/from date doesn't work
 #
 CREATE TABLE t1 AS SELECT repeat('a',20) AS s1 LIMIT 0;
+SET time_zone=_latin1'+03:00';
 SET timestamp=1216359724;
 INSERT INTO t1 VALUES (current_date);
 INSERT INTO t1 VALUES (current_time);
@@ -1484,6 +1485,7 @@ s1	hex(s1)
 2008-07-18 08:42:04	32003000300038002D00300037002D00310038002000300038003A00340032003A0030003400
 DROP TABLE t1;
 SET timestamp=0;
+SET time_zone=default;
 #
 # MDEV-5298 Illegal mix of collations on timestamp
 #

mysql-test/r/ctype_utf32.result

@@ -1150,6 +1150,7 @@ SET collation_connection=utf32_general_ci;
 # Bug#32390 Character sets: casting utf32 to/from date doesn't work
 #
 CREATE TABLE t1 AS SELECT repeat('a',20) AS s1 LIMIT 0;
+SET time_zone=_latin1'+03:00';
 SET timestamp=1216359724;
 INSERT INTO t1 VALUES (current_date);
 INSERT INTO t1 VALUES (current_time);
@@ -1161,6 +1162,7 @@ s1	hex(s1)
 2008-07-18 08:42:04	000000320000003000000030000000380000002D00000030000000370000002D00000031000000380000002000000030000000380000003A00000034000000320000003A0000003000000034
 DROP TABLE t1;
 SET timestamp=0;
+SET time_zone=default;
 #
 # MDEV-5298 Illegal mix of collations on timestamp
 #