Rename Event.Status to Event.Condition to match v1beta3 agreement

Question - should this be a phase?  Seems like no, since phase implies
defined lifecycle and this field is explicitly not defined.

@lavalamp

Part of #1519 to allow roundtripping to v1beta3
Instead of conv function consider:

```
newer.Scheme.AddStructFieldConversion(string(""), "Status", string(""), "Condition")
newer.Scheme.AddStructFieldConversion(string(""), "Condition", string(""), "Status")
```

I'm not 100% sure it's better. I have a change in the pipeline that will allow asserting parent type to avoid accidentally making this transformation to another type.