"Merged build finished" message should include build outcome

[djMax]

Because why not... :) In our case it's not publishing the comment with link on the status because it doesn't have rights, but it IS publishing the build comments, so this would allow some utility even w/o admin access.

[elfreyshira]

👍 This would be extremely helpful!

[pradeepto]

👍 for this feature request.

The code for this is here : https://github.com/janinko/ghprb/blob/master/src/main/java/org/jenkinsci/plugins/ghprb/GhprbBuilds.java#L112

Can this be made configurable somehow? I would like to help if I knew where to start. cc @janinko

Thank you for this plugin btw. Super neat work!