git: openjdk/jdk11u-dev: 8275536: Add test to check that File::lastModified returns same time stamp as Files.getLastModifiedTime

[Goetz Lindenmaier]

Changeset: a96e70c8
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2022-01-06 15:56:35 +0000
URL:       https://git.openjdk.java.net/jdk11u-dev/commit/a96e70c87bc5d279b41e8a4966acc196d83e228e

8275536: Add test to check that File::lastModified returns same time stamp as Files.getLastModifiedTime

Backport-of: 97d3280eb4735f5b84cd4a9a1286e35c1c48113a

+ test/jdk/java/io/File/LastModifiedTest.java