RFR: 8286460: Remove dependence on JAR filename in CDS tests [v2]

[Calvin Cheung]

On Tue, 10 May 2022 17:39:32 GMT, Christian Stein <cstein at openjdk.org> wrote:

>> Use location information stored in JUnit `Test` class' runtime representation in order to remove a hard-coded dependence on JUnit's JAR filename.
>
> Christian Stein has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update copyright year to 2022

Marked as reviewed by ccheung (Reviewer).

-------------

PR: https://git.openjdk.java.net/jdk/pull/8624