Fixing a test case that fails in some time zones. Making sure the test is run in `UTC` zone will fix the issue. Confirmed the fix by manually setting machine's time zone to Europe/Dublin.
------------- Commit messages: - initial commit Changes: https://git.openjdk.org/jdk/pull/15829/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15829&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8316540 Stats: 15 lines in 1 file changed: 9 ins; 0 del; 6 mod Patch: https://git.openjdk.org/jdk/pull/15829.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/15829/head:pull/15829 PR: https://git.openjdk.org/jdk/pull/15829
