RFR: 1886: Only configure CSRIssueBot for issuetrackers where we have CSR configured

[Zhao Song]

On Thu, 20 Apr 2023 20:18:59 GMT, Zhao Song <zsong at openjdk.org> wrote:

> As Erik said in the issue, now the PullRequestBotFactory creates a CSRIssueBot for every IssueTracker configured. It is unnecessary and would trigger some errors.
> 
> In this patch, PullRequestBotFactory only creates a CSRIssueBot for the IssueTracker which is associated with any CSR enabled repository.

Thanks for the review!

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PR Comment: https://git.openjdk.org/skara/pull/1506#issuecomment-1518060745