cfn validate doesn't validate missing properties

If I have the following snippet in my schema

```json
    "additionalProperties": false,
    "readOnlyProperties": [
        "/properties/TPSCode"
    ],
    "primaryIdentifier": [
        "/properties/TPSCode"
    ],
```

But I haven't actually defined a `TPSCode` in `properties`, I would expect `cfn validate` to fail. 