Separate lazy-versioned NormalizedNodeDataInput

Separate lazy-versioned NormalizedNodeDataInput

NormalizedNodeInputStreamReader is really only one implementation
of the streaming format, which happens to be bound to LITHIUM_VERSION.

This effectively means NormalizedNodeInputOutput can give out either
a version-bound reader or an unbound reader -- which we facilitate by
creating VersionedNormalizedNodeDataInput which is a simple forwarder
with lazily-initialized delegate.

Since this increases the number of (NormalizedNode)DataInput
implementations, we share as much code as possible through the use
of forwarding implementations.

JIRA: CONTROLLER-1898
Change-Id: I28713346730ed5bf7f912bf8afa5d8722b202035
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>