RFR: Backport issues can be open, use proper link relationship [v2]

[Erik Helin]

On Mon, 7 Dec 2020 12:34:39 GMT, Robin Westberg <rwestberg at openjdk.org> wrote:

>> When looking for eligible backport issues, consider open ones as well.
>
> Robin Westberg has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Allow considering only resolved backport issues (for sync labelling)

Looks good!

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Marked as reviewed by ehelin (Reviewer).

PR: https://git.openjdk.java.net/skara/pull/966