git: openjdk/jdk: 8314120: Add tests for FileDescriptor.sync

[Aleksey Shipilev]

Changeset: 2e8a0ab2
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2023-08-15 16:11:09 +0000
URL:       https://git.openjdk.org/jdk/commit/2e8a0ab27227b2e06e2ece3776f66ff0932ef353

8314120: Add tests for FileDescriptor.sync

Reviewed-by: alanb, bpb

+ test/jdk/java/io/FileDescriptor/Sync.java
+ test/micro/org/openjdk/bench/java/io/FileDescriptorSync.java