Fix test failure due to renamed Australian timezone

Australia/Sydney uses the AEST/AEDT (Australian Eastern
Standard/Daylight Time) abbreviations with pytz >= 2014.7.

We need a different country that still uses 'EST'.

(I hoped for one with a different UTC offset, but I can't seem to find one!)

src/zope/i18n/tests/test_formats.py

@@ -320,10 +320,10 @@ def testParseTimeZoneNames(self):
         self.assertEqual(dt.tzinfo.zone, 'US/Eastern')
         self.assertEqual(dt.tzinfo.tzname(dt), 'EST')
 
-        dt = self.format.parse('01.01.2003 09:48 Australia/Sydney',
+        dt = self.format.parse('01.01.2003 09:48 Canada/Eastern',
                                'dd.MM.yyyy HH:mm zzzz')
-        self.assertEqual(dt.tzinfo.utcoffset(dt), datetime.timedelta(hours=11))
-        self.assertEqual(dt.tzinfo.zone, 'Australia/Sydney')
+        self.assertEqual(dt.tzinfo.utcoffset(dt), datetime.timedelta(hours=-5))
+        self.assertEqual(dt.tzinfo.zone, 'Canada/Eastern')
         self.assertEqual(dt.tzinfo.tzname(dt), 'EST')
 
         # Note that historical and future (as far as known)
@@ -340,7 +340,6 @@ def testParseTimeZoneNames(self):
         self.assertEqual(dt.tzinfo.tzname(dt), 'EDT')
         self.assertEqual(dt.tzinfo.utcoffset(dt), datetime.timedelta(hours=-4))
 
-
     def testDateTimeParseError(self):
         self.assertRaises(DateTimeParseError,
             self.format.parse, '02.01.03 21:48', 'dd.MM.yyyy HH:mm')