RFR: 1706: Store github checks in PR unique way [v2]

[Zhao Song]

On Thu, 9 Feb 2023 23:04:10 GMT, Zhao Song <zsong at openjdk.org> wrote:

> I think this looks ok. Could you run it in staging and verify that it works and looks ok before integrating?

I think it works fine. Currently, each pr would have a unique jcheck. https://github.com/openjdk/playground/pull/126/checks?check_run_id=11239907703

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PR: https://git.openjdk.org/skara/pull/1470