RFR: 8253939: [TESTBUG] Increase coverage of the cgroups detection code [v4]

[Severin Gehwolf]

On Wed, 28 Oct 2020 15:42:37 GMT, Bob Vandette <bobv at openjdk.org> wrote:

>> Severin Gehwolf 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 one additional commit since the last revision:
>> 
>>   8253939: [TESTBUG] Increase coverage of the cgroups detection code
>
> Looks good.

Thanks for the review!

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PR: https://git.openjdk.java.net/jdk/pull/609