test(remote-config): onConfigUpdatedi helper is one-at-a-time, use correct version

- previously we were still using the old v1 definitions, so no updates were used
- previously default instances/concurrency were allowed, so parallel e2e runs could
  update the template in between the update/alter/publish causing publish errors

Author: mikehardy

.github/workflows/scripts/functions/src/fetchAppCheckToken.ts

@@ -9,11 +9,13 @@
 
 import { getAppCheck } from 'firebase-admin/app-check';
 import { CallableRequest, onCall } from 'firebase-functions/v2/https';
+import { getAdminApp } from '.';
 
 // Note: this will only work in a live environment, not locally via the Firebase emulator.
 export const fetchAppCheckTokenV2 = onCall(async (req: CallableRequest<{ appId: string }>) => {
   const { appId } = req.data;
   const expireTimeMillis = Math.floor(Date.now() / 1000) + 60 * 60;
+  getAdminApp();
   const result = await getAppCheck().createToken(appId);
   return { ...result, expireTimeMillis };
 });

.github/workflows/scripts/functions/src/testFunctionRemoteConfigUpdate.ts

@@ -13,6 +13,10 @@ import { CallableRequest, onCall } from 'firebase-functions/v2/https';
 import { getAdminApp } from '.';
 
 export const testFunctionRemoteConfigUpdateV2 = onCall(
+  {
+    maxInstances: 1,
+    concurrency: 1,
+  },
   async (
     req: CallableRequest<{
       operations: {

packages/remote-config/e2e/helpers.js

@@ -5,7 +5,7 @@ exports.updateTemplate = async function updateTemplate(operations) {
   const response = await fetch(
     'https://us-central1-' +
       getE2eTestProject() +
-      '.cloudfunctions.net/testFunctionRemoteConfigUpdate',
+      '.cloudfunctions.net/testFunctionRemoteConfigUpdateV2',
     {
       method: 'post',
       body: JSON.stringify({ data: operations }),