RFR: 6905: Add rule for heap dumps

Fri Oct 2 06:38:07 UTC 2020

On Thu, 1 Oct 2020 21:08:42 GMT, Jean-Philippe Bempel <github.com+4610701+jpbempel at openjdk.org> wrote:

> Rule based on ne JDK15 jdk.HeapDump event.
> If at least on heap dump is performed, rule indicates it as information, score 50.
> For test added a new JFR file containing an example where 2 dumps were performed

Hi @jpbempel - run mvn spotless:apply, and the remaining problem should go away. :)

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