message: updating identity servive naming
diff: "positionInOperation": "first",
  "parameters": [
  {
  - "name": "certificateClientEndpoint",
  - "description": "The certificate client endpoint, for example https://identity.confidential-ledger.core.azure.com",
  + "name": "certificateEndpoint",
  + "description": "The certificate endpoint (or \"Identity Service Endpoint\" in the Azure portal), for example https://identity.confidential-ledger.core.azure.com",
  "required": true,
  "type": "string",
  "in": "path",
  