RFR: 6905: Add rule for heap dumps

Fri Oct 2 15:43:36 UTC 2020

On Fri, 2 Oct 2020 15:32:16 GMT, Jean-Philippe Bempel <github.com+4610701+jpbempel at openjdk.org> wrote:

>> with WSL 2, I was able to reproduce the formatting errors, but no on native windows.
>> I think there is an issue with spotless on windows
>
> ok find the issue related to windows script: checkformatting.bat
> it basically stopped after the `mvn p2:site` command and not run the spotless check
> I can fix that if you want in a separate PR but I think need an issue in JIRA

I created https://bugs.openjdk.java.net/browse/JMC-6914.

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PR: https://git.openjdk.java.net/jmc/pull/113