Enumerate all schema 1 JSONSchema

[mfeit-internet2]

All JSONSchema enumerations should have an enumerated but not-required schema field:

        {
            "type": "object",
            "properties": {
                "schema":      { "type": "integer", "enum": [ 1 ] },
                ...
            },
            "required": [ "whatever" ],
            "additionalProperties": false
        }