Give all VDIs a reasonable name-label and name-description
Give all VDIs a reasonable name-label and name-description

Add image id to cached glance images as well as disk type so it's easy
to see if a VDI is an os, swap or ephemeral disk.

Change-Id: I7c1e21e26a98bd38898483f4230ede3099c6099d

n0ano/ganttclient