[Users] Report size of thin provisioned disk

[Jeff Bailey]

With 3.2 alpha, on the disks subtab of the virtual machines tab I'm 
seeing the correct "virtual size" for the disk but the "actual size" 
remains 1GB even though the drive has grown to 11GB (according to lvs 
output).  It doesn't seem to be causing any problems.  The auto-growth 
(from my perspective) is working much smoother than it did a release ago 
:)  I just wondered if anyone else had noticed this.

Thanks,
   Jeff