Registry router fixes (#1961)

* only cache routes if told to do so

* Use roundrobin selector and retry in proxy

* Update lookup to require service

* Fix compile

* Fix compile

* Update

* Update

* rename query to lookup

* Update router.go

* Update

client/lookup.go

@@ -19,16 +19,16 @@ func LookupRoute(ctx context.Context, req Request, opts CallOptions) ([]string,
 	}
 
 	// construct the router query
-	query := []router.QueryOption{router.QueryService(req.Service())}
+	query := []router.LookupOption{}
 
 	// if a custom network was requested, pass this to the router. By default the router will use it's
 	// own network, which is set during initialisation.
 	if len(opts.Network) > 0 {
-		query = append(query, router.QueryNetwork(opts.Network))
+		query = append(query, router.LookupNetwork(opts.Network))
 	}
 
 	// lookup the routes which can be used to execute the request
-	routes, err := opts.Router.Lookup(query...)
+	routes, err := opts.Router.Lookup(req.Service(), query...)
 	if err == router.ErrRouteNotFound {
 		return nil, errors.InternalServerError("go.micro.client", "service %s: %s", req.Service(), err.Error())
 	} else if err != nil {