stop using SingleHostDiscovery

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

plugins/auth-backend/src/service/standaloneServer.ts

@@ -18,7 +18,7 @@ import {
   createServiceBuilder,
   loadBackendConfig,
   ServerTokenManager,
-  SingleHostDiscovery,
+  HostDiscovery,
   useHotMemoize,
 } from '@backstage/backend-common';
 import { Server } from 'http';
@@ -35,7 +35,7 @@ export async function startStandaloneServer(
 ): Promise<Server> {
   const logger = options.logger.child({ service: 'auth-backend' });
   const config = await loadBackendConfig({ logger, argv: process.argv });
-  const discovery = SingleHostDiscovery.fromConfig(config);
+  const discovery = HostDiscovery.fromConfig(config);
 
   const database = useHotMemoize(module, () => {
     const knex = Knex({