ZF-9197: Modifiy the default date timezone without reverting it back to it's previous value


Some of the tests for the selected components include calls to the PHP function date_default_timezone_set() to change the date.timezone to allow the their tests to execute correctly. The problem is that these test don't change it back to its previous value after the test has executed, therefore changing the test environment and invalidating any tests which execute after wards.


Fixed in ZF2 with GH-325