Enables support for configuring Cinder with a NetApp backend.
This change adds all relevant parameters for:
- Clustered Data ONTAP (NFS, iSCSI, FC)
- Data ONTAP 7-Mode (NFS, iSCSI, FC)
- E-Series (iSCSI)
Change-Id: If6c6e511ef2d26c4794e3b37c61e5318485ff4db