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Normally heat would be run without root capabilities. The directory /var/lib/libvirt/images is typically not world readable. As a result, the glance operation requires root permissions to actually read the file, and may be a source of confusion for users. Also break the notification into two lines since it wraps on 80 character windows. Change-Id: I905f3c24ed253ddc1e843bc73c93464c65d3df0b