Properly format 'attached to' column list when listing volumes

Previously, no data was being returned for the 'attached to' field
when listing volumes. Dig into the the returned array to format
the column.

Change-Id: Iebd79e5ddcb4a335703d9b2675aa7128995de918
Closes-Bug: #1404931
Revert some docs changes from multi-delete

The headers in the doc files are the commands, not a description.

I missed thiese in the original reviews:
https://review.openstack.org/140567
https://review.openstack.org/140581

Change-Id: Iae2631f6b485e8c568ff305e5992c193f80ebe71
Allow service description to be set for KS V3

Change-Id: Ibf84882c9a9f408268c225190436fc1a534e1017
Closes-Bug: #1404997
Merge "Revert some docs changes from multi-delete"
Merge "Allow service description to be set for KS V3"
Merge "Properly format 'attached to' column list when listing volumes"