Improve Manila HDS HNAS Driver Manual
Improve Manila HDS HNAS Driver Manual

Improve the network configuration guide for Manila HDS
HNAS Driver. Also, describe the driver modules following
other documentations.

Change-Id: Ic199e3842d3873f9bfd90aa4c9a248ed828cadcd

vponomaryov/manila,bswartz/manila,scality/manila,scality/manila,openstack/manila,bswartz/manila,NetApp/manila,vponomaryov/manila,openstack/manila,NetApp/manila