Updates to nova driver testing
Updates to nova driver testing

I have updated using the current information in the wiki:
https://wiki.openstack.org/wiki/HypervisorSupportMatrix/DeprecationPlan

In addition I have noted the removal of the docker driver during
Icehouse.

Change-Id: I9247547c38d78dbce23939ba3001f276d5866ebd

irinapovolotskaya/i,stackforge/driverlog