we only bail on unknown formats for strings

[mmoskal]

The JSON schema allows formats on numbers and other data. We should bail if we don't understand them.

In particular, numbers have formats int32, int64, double etc in Kubernetes testcases

[hudson-ai]

I don't think these are part of the JSON Schema spec -- does your favorite json validator actually use these for anything? Might be from extension spec though..?

[mmoskal]

All format attributes defined in this section apply to strings, but a format attribute can be specified to apply to any instance types defined in the data model defined in the core JSON Schema. [json-schema]

OK, so if you know a format is a string format, then you can ignore it on non-strings

but if you don't know what a format is, you should assume it applies to the type in question and bail

to be consistent with bailing on unsupported string formats