Update the location of the LH driver

When the lefthand driver was pulled from nova into cinder, the
volume_driver location was incorrect. The migration mapped the old
location to the new location;
cinder.volume.drivers.san.HpSanISCSIDriver
This patch is just updating the docs to the correct location.

Change-Id: I60275ee4eb680e479231d94282d2c0731b672946
Remove keystone-manage import_nova_auth

import_nova_auth has been dropped as part of change
If7277e912f11c9bf3bec15f9addd848e0774f14f. Remove it from the
documentation as well.

Change-Id: Ib213d1937a70ddd88a22009d168f924d9adeceae
Closes-Bug: #1202354
Update Nexenta driver doc

Replace Nova with Cinder

Change-Id: Ibb125dab9c676e84e52f628679bf178e5c9f2266
Merge "Update the location of the LH driver"
Merge "Update Nexenta driver doc"
Merge "Remove keystone-manage import_nova_auth"