RFR: 8273242: (test) Refactor to use TestNG for RuntimeTests ExecCommand tests [v2]

[Naoto Sato]

On Wed, 8 Sep 2021 19:31:46 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> The ExecCommand test of Runtime.exec is difficult to maintain; the parallel arrays are hard to keep in sync.
>> This cleanup converts to use TestNG DataProviders and other improvements.
>
> Roger Riggs has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
> 
>  - Simplify file deletion
>    Add enum to document test modes.
>  - Merge branch 'master' into 8273242-execcommand-refactor
>  - 8273242: Refactored ExecCommand to use TestNG DataProvider for cases

Marked as reviewed by naoto (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/5335