This is a follow up from #3340. We should add EDS support also to the config_dump admin endpoint. Some thought needs to be put into how this will be managed given that on its own showing EDS output disjoint from cluster output is not that useful. If a cluster is an EDS cluster, should we dump the EDS configuration as a nested item in the cluster output?

Note that host information is available in the /clusters endpoint which is why this was not implemented with as high of an urgency.