Remove custom-resources directory from client-go
Add TPR example back
Mention CRD is successor to TPR
Kubernetes-commit: bfa9ce4308ca897711eb1b822bd5f0e31bbef31d
Also add authenticate- prefix to auth samples.
Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>
Kubernetes-commit: 62d1251874cb259d38d727300ac4b2646c4122c8