RFR: 8287873: Add test for using -XX:+AutoCreateSharedArchive with different JDK versions [v11]

[Ioi Lam]

On Thu, 19 Jan 2023 20:10:23 GMT, Matias Saavedra Silva <matsaave at openjdk.org> wrote:

>> This is an enhancement of the test case in [JDK-8296754](https://bugs.openjdk.org/browse/JDK-8296754), which tests against an archive created by the "boot JDK", which is usually set as the previous official JDK release when building the JDK repo.
>> 
>> If it's able to acquire previous valid JDK releases:
>>      - Download and install previous JDK versions (19 through N)
>>         where N == java.lang.Runtime.version​().major() - 1
>>      - Test the interaction of the current JDK versus each of the previous releases
>> 
>> If it's not able to find the previous releases revert to the existing logic in TestAutoCreateSharedArchiveUpgrade.java (use the test.boot.jdk or test.previous.jdk properties). Verified with tier1-4 tests.
>
> Matias Saavedra Silva has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Corrected comments

LGTM.

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Marked as reviewed by iklam (Reviewer).

PR: https://git.openjdk.org/jdk/pull/11852