Fixes bug #919390 - Block Migration fails when keystone is un use.
Fixes bug #919390 - Block Migration fails when keystone is un use.

I've Updated the calls to nova.virt.libvirt.utils.fetch_image() to match the rest of the class.

Additionally, nova.virt.images.fetch() currently makes no use of the user/project id supplied.

Change-Id: I2db4b8c1b6542909fcc2b452fc961e22fe2557bf

n0ano/ganttclient