adjust sriov memory overhead test to expected value
adjust sriov memory overhead test to expected value

Signed-off-by: Vladik Romanovsky <db5ae48058e997e28635a3de1ef9063024186eb4@redhat.com>

davidvossel/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt,davidvossel/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt,davidvossel/kubevirt,stu-gott/kubevirt,davidvossel/kubevirt,kubevirt/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt