Update cache tests for new last_changed value. See #WP23448


git-svn-id: https://unit-tests.svn.wordpress.org/trunk@1208 4a5a2adb-35eb-4268-9a1b-fe04a4134342
Update cache tests to reflect new last_changed value. See #WP23448


git-svn-id: https://unit-tests.svn.wordpress.org/trunk@1209 4a5a2adb-35eb-4268-9a1b-fe04a4134342