Use portable tz in serialstep test

Signed-off-by: mdouglas47 <mdouglas47@bloomberg.net>

Author: morgando

tests/serialstep.test/s7_01.req

@@ -4,7 +4,7 @@
 1 insert into shows (id, name, date, dec) values(7, 'Love', '2011/03/26T13:12:47 Asia/Hong_Kong', '1.000')
 1 insert into shows (id, name, date, dec) values(12, 'UWCS', '2014/09/28T14:35:00 America/Toronto', '6.5443')
 1 insert into shows (id, name, date, dec) values(8, 'China', '2014/05/1T00:00:00 Asia/Taipei', '8.2443')
-1 insert into shows (id, name, date, dec) values(10, 'JDKhjkhhda', '2014/01/01T00:00:00 US/Pacific', '2.321')
+1 insert into shows (id, name, date, dec) values(10, 'JDKhjkhhda', '2014/01/01T00:00:00 America/Los_Angeles', '2.321')
 2 set transaction serial
 3 set transaction serial
 2 begin