virt-handler: Export masquerade interface check for migration to function
virt-handler: Export masquerade interface check for migration to function

This commit change the code to make it easier to understand.

Signed-off-by: Or Mergi <df7b5d365066aa2e85ccd79e6b18e2863f1da762@redhat.com>

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