Merge pull request #17023 from juanvallejo/jvallejo/pick-upstream-51750

Automatic merge from submit-queue (batch tested with PRs 16885, 17023).

UPSTREAM: 51750: output `<none>` for colums not found

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1505796

Picks changes introduced in kubernetes/kubernetes#51750
to allow the custom-columns to succeed / print all known column values even when
an object's field does not exist.

**Before**
```
$ oc get dc mydc -o custom-columns=NAME:.metadata.name,UNKNOWN:.metadata.unknown
error: unknown is not found
```

**After**
```
$ oc get dc mydc -o custom-columns=NAME:.metadata.name,UNKNOWN:.metadata.unknown
NAME      UNKNOWN
mydc      <none>
```

cc @openshift/cli-review