Updated openstack/openstack
Project: openstack/cinder  24ce46bb98ec55cc1ceffd847e92d153bbc8a09a

NetApp NFS and iSCSI: move zapi client logic into modules

This patch moves the logic for constructing zapi requests
into its own modules in order to reduce coupling with
driver logic, improve testability, and improve readability.
This patch also adds unit tests around the zapi request
logic.

Implements bp improve-netapp-drivers

Change-Id: I3939df9a55d77b14d723422c25bd3dd3bcef9fbe