reopencommand allows a closed issue to be reopened. The signer must have
updatepolicy right to push a reopens request.
issueId- The numeric ID or reference name of the issue. e.g.
-f, --force- Forcefully add a new comment that flags the issue as closed. The user requires
updatepolicy action to push a reopened issue.
-h, --help- Prints out a help message.