NFD

In Management protocol - FaceMgmt, split faces/create command into faces/create and faces/update.

• faces/create command considers static properties, such as persistency, only for creating new face.
• faces/create command does not change static properties on an existing face, but will return StatusCode 409 (conflict), with ControlParameters struct that describes the properties of the existing face.
• A separate faces/update command can update static properties on an existing face. It requires FaceId parameter.