RFR: 8343442: Add since checker tests to the networking area modules [v3]

[Jaikiran Pai]

On Mon, 4 Nov 2024 18:28:00 GMT, Nizar Benalla <nbenalla at openjdk.org> wrote:

>> Can I please get a review for this patch that brings the `@since` test described [here](https://mail.openjdk.org/pipermail/jdk-dev/2024-October/009474.html) to the networking area modules.
>> 
>> The benefit from this is helping API authors and reviewer validate the accuracy of `@since` in their source code (and subsequently, in the generated documentation).
>> 
>> The test has been added for `java.base` 2 weeks ago and has helped catch some bugs before they make it to the JDK.
>> 
>> TIA
>
> Nizar Benalla has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Rename tests and directories under modules dir

Thank you for the update, Nizar. This now looks good to me. For my own reference - it looks like these tests will run in `tier3`.
Although we don't have a 2 reviewer rule in this area, it would be good to have at least one more review for this change before it's integrated.

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Marked as reviewed by jpai (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/21838#pullrequestreview-2414509397