RFR: 1625: Validate input from /summary command [v7]

[Erik Joelsson]

On Mon, 24 Oct 2022 21:15:49 GMT, Zhao Song <zsong at openjdk.org> wrote:

>> 1.  Added validation to SummaryCommand.
>> 2. If exceptions are thrown when the bot is evaluating the current status of the pr, the exceptions will be treated as integration blocker.
>
> Zhao Song has updated the pull request incrementally with one additional commit since the last revision:
> 
>   change log.info to log.warning when commit message is incorrectly formatted

Marked as reviewed by erikj (Lead).

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PR: https://git.openjdk.org/skara/pull/1401