add roost dist to scenario output

Created by: Lars Dalby

Imported comments:

By Lars Dalby on 2018-11-06T14:59:40.086Z

mentioned in commit 6c0db4cb

By Lars Dalby on 2018-11-06T14:59:35.606Z

closed via merge request !31

By Lars Dalby on 2018-11-06T14:59:31.659Z

mentioned in merge request !31

By Lars Dalby on 2018-11-06T14:34:00.163Z

created branch 54-add-roost-dist-to-scenario-output