FibreChannel drivers for NetApp Data ONTAP storage controllers

This patch adds FibreChannel support to NetApp's Cinder drivers
for Data ONTAP (7-mode and Cluster-mode).  The drivers make full
use of Cinder's FibreChannel zone manager.

Implements blueprint add-fibre-channel-support-to-netapp-drivers
Change-Id: Ifbda275e4a60dda144a169ef00a4ea5e548dfa03
Merge "FibreChannel drivers for NetApp Data ONTAP storage controllers"