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

util/http/roundtripper.go

@@ -4,7 +4,6 @@ import (
 	"errors"
 	"net/http"
 
-	"github.com/micro/go-micro/v3/router"
 	"github.com/micro/go-micro/v3/selector"
 )
 
@@ -15,7 +14,7 @@ type roundTripper struct {
 }
 
 func (r *roundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
-	routes, err := r.opts.Router.Lookup(router.QueryService(req.URL.Host))
+	routes, err := r.opts.Router.Lookup(req.URL.Host)
 	if err != nil {
 		return nil, err
 	}

util/router/router.go

@@ -10,7 +10,7 @@ type apiRouter struct {
 	router.Router
 }
 
-func (r *apiRouter) Lookup(...router.QueryOption) ([]router.Route, error) {
+func (r *apiRouter) Lookup(service string, opts ...router.LookupOption) ([]router.Route, error) {
 	return r.routes, nil
 }