RFR: 224: Add --no-draft flag to `git pr list`

[Robin Westberg]

On Mon, 13 Jan 2020 14:57:43 GMT, Erik Helin <ehelin at openjdk.org> wrote:

> Hi all,
> 
> please review this patch that adds the flag `--no-draft` to `git pr list`.
> 
> Thanks,
> Erik
> 
> ## Testing
> - [x] Manual testing of `git pr list`

Looks good!

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Marked as reviewed by rwestberg (Reviewer).

PR: https://git.openjdk.java.net/skara/pull/349