Add force-delete option for volumes

Again, looking thorouhgly through cinders commands, i noticed
an force-delete command, which was for volumes only.
Decided it would work best as an optional argument for the
regular delete case

Change-Id: I9de6040ea0ad71c2a9c8edc7be18779d39e7ede0
Turn down requests logging level

Looks like the default is INFO, we don't need to see that unless
--debug is specified.

Change-Id: Ieee5d4dc5102f11536ecc6330461f86101811f9e
Merge "Turn down requests logging level"
Added compute hypervisor support.

Change-Id: Ib8109550b06d152773394a1d15f6202b9f9b029c