add xms-ids for orbital (Azure#17951)

Author: LinglingTong

specification/orbital/resource-manager/Microsoft.Orbital/preview/2021-04-04-preview/orbital.json

@@ -1024,6 +1024,7 @@
           "items": {
             "$ref": "#/definitions/SpacecraftLink"
           },
+          "x-ms-identifiers": [],
           "description": "Links of the Spacecraft"
         }
       },
@@ -1298,6 +1299,7 @@
           "items": {
             "$ref": "#/definitions/ContactProfileLink"
           },
+          "x-ms-identifiers": [],
           "description": "Links of the Contact Profile"
         }
       },
@@ -1407,6 +1409,11 @@
           "items": {
             "$ref": "#/definitions/ContactProfileLinkChannel"
           },
+          "x-ms-identifiers": [
+            "centerFrequencyMHz",
+            "bandwidthMHz",
+            "/endPoint/endPointName"
+          ],
           "description": "Contact Profile Link Channel"
         }
       },
@@ -1577,6 +1584,9 @@
           "items": {
             "$ref": "#/definitions/CloudErrorBody"
           },
+          "x-ms-identifiers": [
+            "code"
+          ],
           "description": "A list of additional details about the error."
         }
       },
@@ -1600,6 +1610,7 @@
           "items": {
             "$ref": "#/definitions/AvailableContacts"
           },
+          "x-ms-identifiers": [],
           "description": "A list of available contacts"
         },
         "nextLink": {