return timestamps as zoned at UTC
return timestamps as zoned at UTC

When the original database column has a datetime, but contains
no zone information, calling toString() would interpret it as a
timestamp in the local timezone. So if the time was at 00:00,
this would be transformed to 01:00 for dates in CET and
02:00 for dates in CEST.

kTT/dbunit-extractor,kTT/dbunit-extractor