RFR: jira: make links() more reliable

[Robin Westberg]

On Wed, 9 Sep 2020 10:19:32 GMT, Erik Helin <ehelin at openjdk.org> wrote:

> Hi all,
> 
> please review this patch that makes `JiraIssue.links()` a bit more reliable in the face of unexpected HTTP codes. I
> also took the liberty to use an `ArrayList` instead of concatenating `Stream`s.
> Thanks,
> Erik

Looks good!

-------------

Marked as reviewed by rwestberg (Reviewer).

PR: https://git.openjdk.java.net/skara/pull/810