[Recorder] Mask access_token in the JSON responses in recordings (Azure#12759)

### TODO
- [x] Proposal - Come up with a method to mask "access_token" in the recorder rather than expecting users to provide it through the custom config 
  - [x] Node
  - [x] Browser 
- [x] Add "mask" method to the default customizations
- [x] Changelog
- [x] Regenerate a recording from app-config and keyvault-keys tests with "access_token"s
- [x] (Beyond the scope of this PR) Remove the "access_token" custom replacement from the recorder config in all the packages Keyvault, form recognizer, etc Azure#14602

Author: HarshaNalluru

sdk/appconfiguration/app-configuration/recordings/node/authentication/recording_token_authentication_works.js

@@ -8,7 +8,7 @@ import {
   CredsAndEndpoint
 } from "./utils/testHelpers";
 import * as assert from "assert";
-import { Recorder, isPlaybackMode } from "@azure/test-utils-recorder";
+import { Recorder } from "@azure/test-utils-recorder";
 import { Context } from "mocha";
 
 describe("Authentication", () => {
@@ -31,10 +31,7 @@ describe("Authentication", () => {
     );
   });
 
-  it("token authentication works", async function(this: Context) {
-    if (isPlaybackMode()) {
-      this.skip();
-    }
+  it("token authentication works", async function() {
     const client = new AppConfigurationClient(
       credsAndEndpoint.endpoint,
       credsAndEndpoint.credential
@@ -43,7 +40,7 @@ describe("Authentication", () => {
     // it doesn't matter if any data comes in so long as we were
     // able to connect and call the service
     await client.addConfigurationSetting({
-      key: `token-authentication-test-${Date.now()}`,
+      key: `token-authentication-test-${recorder.newDate("label-1").valueOf()}`,
       value: "hello"
     });
   });

sdk/appconfiguration/app-configuration/test/public/auth.spec.ts

@@ -42,10 +42,7 @@ export function startRecorder(that: any): Recorder {
       AZURE_CLIENT_SECRET: "azure_client_secret",
       AZURE_TENANT_ID: "azuretenantid"
     },
-    customizationsOnRecordings: [
-      (recording: any): any =>
-        recording.replace(/"access_token":"[^"]*"/g, `"access_token":"access_token"`)
-    ],
+    customizationsOnRecordings: [],
     queryParametersToSkip: []
   };