RFR: 2395: Make it configurable to disable the contributor check for the /backport command

[Erik Joelsson]

On Mon, 21 Oct 2024 17:14:53 GMT, Zhao Song <zsong at openjdk.org> wrote:

> In a discussion with Erik offline, he pointed out that the /backport command is different from all other commit commands. Instead of affecting the current repository, it only reads information from it and creates a branch in a fork of another repository. On GitHub, since anyone can comment on commits, it makes sense to have access control. However, in GitLab, where only authorized engineers can access the relevant repositories, we can safely disable the contributor check. In summary, it makes sense to make it configurable to disable the contributor check for the /backport command.

Marked as reviewed by erikj (Lead).

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PR Review: https://git.openjdk.org/skara/pull/1692#pullrequestreview-2383009330