RFR: 7903300: Add test library support to jtreg plugin [v2]

[Maurizio Cimadamore]

On Thu, 15 Sep 2022 18:16:01 GMT, Guoxiong Li <gli at openjdk.org> wrote:

>> Hi all,
>> 
>> Currently, when we open a jtreg test file which uses the JUnit or TestNG, the plugin can't identify the related classes of the JUnit or TestNG. So the statement such as `import org.junit.Test` is marked as red with error message `Cannot resolve symbol 'junit'`.
>> 
>> This patch adds the jtreg libraries directory to the lib path of the `Jetbrains IDEA` when opening the JUnit or TestNG test files so that the `Jetbrains IDEA` can identify the related classes.
>> 
>> Thanks for taking the time to review.
>> 
>> Best Regards,
>> -- Guoxiong
>
> Guoxiong Li has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Bump the version and revise notes.
>  - Adjust the api name. Fix the possible NPE and remove duplicated entries.

Looks good

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Marked as reviewed by mcimadamore (Committer).

PR: https://git.openjdk.org/jtreg/pull/117