virtctl: add a migrate-cancel test to vm_test
virtctl: add a migrate-cancel test to vm_test

Signed-off-by: Uri Lublin <0332784c07b6f27b46541214503bc0da50f0f291@redhat.com>

kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt