This replaces the following path-label munger config, except
we're using kind/api-change for everything instead of two
different kind/ labels

```
^pkg/api/([^/]+/)?types.go$    kind/api-change
^pkg/api/([^/]+/)?register.go$ kind/new-api
^pkg/apis/[^/]+/([^/]+/)?types.go$    kind/api-change
^pkg/apis/[^/]+/([^/]+/)?register.go$ kind/new-api
```