Currently `kubectl apply` determines correct patch type for given
GVKs by trying to register schema and if it succeeds, it uses
strategic-merge-patch.
But OpenAPI endpoint already stores which patch types are supported
by GVKs. This PR checks OpenAPI endpoint to retrieve patch type,
if OpenAPI is enabled. If it is not enabled, patch type determination
will be done as conventional registration method.
Kubernetes-commit: cddbb0c56397448ac0489f0473a26601c1feece8
Arda Güçlü
Sean Sullivan