[Communication]: Add SDK operation to exchange access token (Azure#15449)

Introduce new operation to exchange an AAD token for ACS token:

* Generated new models from ACS Identity's 2021-03-31-preview1 swagger
* Introduced new `exchangeToken` method into public client
* Introduced new environment variables for testing
* Introduced tests for node environment

Author: thdinizm

common/config/rush/pnpm-lock.yaml

@@ -1,7 +1,8 @@
 # Release History
 
-## 1.0.1 (Unreleased)
+## 1.1.0-beta.1 (Unreleased)
 
+- `CommunicationIdentityClient` added a new method `exchangeTeamsToken` that provides the ability to exchange a Teams token for an ACS access token.
 
 ## 1.0.0 (2021-03-29)
 

sdk/communication/communication-identity/CHANGELOG.md

@@ -1,6 +1,6 @@
 {
   "name": "@azure/communication-identity",
-  "version": "1.0.1",
+  "version": "1.1.0-beta.1",
   "description": "SDK for Azure Communication service which facilitates user token administration.",
   "sdk-type": "client",
   "main": "dist/index.js",
@@ -79,12 +79,13 @@
     "@azure/core-http": "^1.2.0",
     "@azure/core-lro": "^1.0.2",
     "@azure/core-paging": "^1.1.1",
-    "@azure/logger": "^1.0.0",
     "@azure/core-tracing": "1.0.0-preview.11",
+    "@azure/logger": "^1.0.0",
     "events": "^3.0.0",
     "tslib": "^2.0.0"
   },
   "devDependencies": {
+    "@azure/msal-node": "^1.0.2",
     "@azure/dev-tool": "^1.0.0",
     "@azure/eslint-plugin-azure-sdk": "^3.0.0",
     "@azure/test-utils": "^1.0.0",