Use full namespace object, not stub

When generating the origin record, we need the full namespace object
filled out (including the authorization and token-generation info).
This is because the origin's policy is used when later responding to
clients.

The same thing is not needed for the cache ads; the cache namespace
info is only used for determining whether or not a cache supports
a particular namespace.

director/advertise.go

@@ -148,10 +148,7 @@ func AdvertiseOSDF() error {
 			}
 			originAd.URL = *originURL
 
-			originNS := NamespaceAd{}
-			originNS.Path = ns.Path
-			originNS.RequireToken = ns.UseTokenOnRead
-			originAdMap[originAd] = append(originAdMap[originAd], originNS)
+			originAdMap[originAd] = append(originAdMap[originAd], nsAd)
 		}
 
 		for _, cache := range ns.Caches {