Remove domain label from VMI metrics
Remove domain label from VMI metrics

Domain is being removed because they originate from the original metrics implementation where the more useful labels like name and namespace did not exist

Signed-off-by: arthursens <cc03e31de1c9b745f120ecc4b47ff4d28569051d@gmail.com>

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