Add code to the esg-orp script so that at installation time config files will be added/modified as required to make the drop-down list of providers work.  The esgf_known_providers.xml file itself must be provided on the dist server in the same directory as the esg-orp script (i.e. ${esg_dist_url}/esg-orp/).  I have added the esgf_known_providers.xml file in the top-level directory for now, and someone with knowledge of how the dist is built will have to do what is necessary to make this happen on the dist server.