Revert "Composite node <-> normalized node serializer and deserializer"

This commit renamed artefact, which was missed on code
review done by me, so reverting it for now, to be properly
documented.

Change-Id: Iffaa2f6e1c0e245adbc10ae59cdbc3eb2f365346
Signed-off-by: Tony Tkacik <ttkacik@cisco.com>
Merge "Revert "Composite node <-> normalized node serializer and deserializer""