RFR: 8252730: jlink does not create reproducible builds on different servers [v3]

[Alan Bateman]

On Tue, 15 Sep 2020 13:40:29 GMT, Ian Graves <igraves at openjdk.org> wrote:

>> Related to [JDK-8252730 jlink does not create reproducible builds on different
>> servers](https://bugs.openjdk.java.net/browse/JDK-8252730). Introduces ordering based on `Archive` module names to
>> ensure stable files (and file signatures) across generated JDK images by jlink.
>
> Ian Graves has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Comparator cleanup

The update using flatMap looks good. I think we need to explore adding more tests if possible.

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Marked as reviewed by alanb (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/156