Update HDS HUS Documentation

Registered by Erlon R. Cruz

This change propose an update in HUS documentation.
    - remove unused information
    - adds more details about the configuration of HUS volumes
    - rename driver files: as we there are new HDS drivers in the road, we rename the driver to avoid confusions

Blueprint information

Status:
Complete
Approver:
Tom Fifield
Priority:
Low
Drafter:
Erlon R. Cruz
Direction:
Approved
Assignee:
Erlon R. Cruz
Definition:
Approved
Series goal:
Accepted for icehouse
Implementation:
Implemented
Milestone target:
milestone icon icehouse
Started by
Tom Fifield
Completed by
Tom Fifield

Related branches

Sprints

Whiteboard

Gerrit topic: https://review.openstack.org/#q,topic:bp/hds-hus-update,n,z

Addressed by: https://review.openstack.org/82548
    Update documentation for HDS HUS cinder driver Rev #1

(?)

Work Items

This blueprint contains Public information 
Everyone can see this information.