don't propagate HostNodeID in endpoints2Hosts

The HostNodeID is already the id of host nodes (as the name suggests),
and that's what summarisation renders. Nothing looks at the HostNodeID
metadata of host nodes.

render/host.go

@@ -67,18 +67,12 @@ func (e endpoints2Hosts) Render(rpt report.Report) Nodes {
 
 	for _, n := range endpoints.Nodes {
 		// Nodes without a hostid are treated as pseudo nodes
-		if hostNodeID, timestamp, ok := n.Latest.LookupEntry(report.HostNodeID); !ok {
+		if hostNodeID, ok := n.Latest.Lookup(report.HostNodeID); !ok {
 			if id, ok := pseudoNodeID(n, local); ok {
 				ret.addChild(n, id, newPseudoNode)
 			}
 		} else {
-			id := report.MakeHostNodeID(report.ExtractHostID(n))
-			ret.addChild(n, id, func(id string) report.Node {
-				// we have a hostNodeID, but no matching host node;
-				// create a new one rather than dropping the data
-				return newHostNode(id).
-					WithLatest(report.HostNodeID, timestamp, hostNodeID)
-			})
+			ret.addChild(n, hostNodeID, newHostNode)
 		}
 	}
 	return ret.result(endpoints)