Automatic merge from submit-queue

Remove json serialization annotations from internal types

fixes #3933

Internal types should never be serialized, and including json serialization tags on them makes it possible to accidentally do that without realizing it.

fixes in this PR:

* types
  * [x] remove json tags from internal types
  * [x] fix references from serialized types to internal ObjectMeta
* generation
  * [x] remove generated json codecs for internal types (they should never be used)
* kubectl
  * [x] fix `apply` to operate on versioned object
  * [x] fix sorting by field to operate on versioned object
  * [x] fix `--record` to build annotation patch using versioned object
* hpa
  * [x] fix unmarshaling to internal CustomMetricTargetList in validation
* thirdpartyresources
  * [x] fix encoding API responses using internal ObjectMeta
* tests
  * [x] fix tests to use versioned objects when checking encoded content
  * [x] fix tests passing internal objects to generic printers

follow ups (will open tracking issues or additional PRs):
- [ ] remove json tags from internal kubeconfig types (`kubectl config set` pathfinding needs to work against external type)
- [ ] HPA should version CustomMetricTargetList serialization in annotations
- [ ] revisit how TPR resthandlers encoding objects
- [ ] audit and add tests for printer use (human-readable printer requires internal versions, generic printers require external versions)
- [ ] add static analysis tests preventing new internal types from adding tags
- [ ] add static analysis tests requiring json tags on external types (and enforcing lower-case first letter)
- [ ] add more tests for `kubectl get` exercising known and unknown types with all output options