DERBY-5172: testTimeAndDateWithCalendar (jdbcapi.CallableTest) fails intermittently with AssertionFailedError: hour expected: differs from actual.

Make the test convert between timezones via the local timezone, like
Derby does when passing a timestamp through a stored procedure.

git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/trunk@1463874 13f79535-47bb-0310-9956-ffa450edef68