Support FICON-attached ECKD volumes on System z for OpenStack Compute (nova)

FICON (Fibre Connection) is a Fibre-Channel FC-4 layer protocol. It is used on mainframes to attach ECKD volumes via Fibre-Channel. While FICON shares a common transport protocol with FCP, there are several differences. ECKD volumes are addressed by a Control Unit and Unit Address, rather than a LUN. Besides, differ...