[full-ci] enhancement: use reva client pool selectors (#6452)

* enhancement: use reva client pool selectors

register mock service to registry and pass tests

* enhancement: bump reva

* Fix a couple of linter issues

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Co-authored-by: Ralf Haferkamp <rhaferkamp@owncloud.com>

services/userlog/pkg/server/http/server.go

@@ -75,7 +75,7 @@ func Server(opts ...Option) (http.Service, error) {
 		svc.Store(options.Store),
 		svc.Config(options.Config),
 		svc.HistoryClient(options.HistoryClient),
-		svc.GatewayClient(options.GatewayClient),
+		svc.GatewaySelector(options.GatewaySelector),
 		svc.RegisteredEvents(options.RegisteredEvents),
 	)
 	if err != nil {