[communication] Add cloud property to Teams identifier (#12552)

* [communication] Add cloud property to Teams identifier

* rename to CommunicationCloudEnvironment

* rename to CommunicationCloudEnvironmentModel

* prettier and spelling fix

Author: DominikMe

custom-words.txt

@@ -672,6 +672,7 @@ galleryimages
 Garda
 Gbps
 GC'd
+gcch
 GCMAES
 gdpr
 genderless

specification/communication/data-plane/Microsoft.CommunicationServicesCommon/preview/2020-11-19-preview1/common.json

@@ -73,6 +73,19 @@
         "modelAsString": true
       }
     },
+    "CommunicationCloudEnvironmentModel": {
+      "description": "The cloud that the identifier belongs to.",
+      "type": "string",
+      "enum": [
+        "public",
+        "dod",
+        "gcch"
+      ],
+      "x-ms-enum": {
+        "name": "CommunicationCloudEnvironmentModel",
+        "modelAsString": true
+      }
+    },
     "CommunicationIdentifierModel": {
       "description": "Identifies a participant in Azure Communication services. A participant is, for example, a phone number or an Azure communication user.",
       "type": "object",
@@ -99,6 +112,10 @@
         "isAnonymous": {
           "type": "boolean",
           "description": "True if the identifier is anonymous."
+        },
+        "cloud": {
+          "$ref": "#/definitions/CommunicationCloudEnvironmentModel",
+          "description": "The cloud that the identifier belongs to."
         }
       }
     }