Fix GregorianCalendarTest#test_addII.

We're going through the trouble of accounting for
DST changes in GregorianCalendar.add(int, int) (as per
the spec), so adjust our tests to agree.

bug: 12778197
Change-Id: Ie98cc11c2a2f7f6d9c7be8d725960552309f4f5d
1 file changed