network, mac update test: Add assertion of the expected status
network, mac update test: Add assertion of the expected status

The test that updates mac, was missing an assertion
that the IP should not be reported for the interface
that is derived from the domain spec.

Add also an assert that the interface with the new mac do have ip.

Signed-off-by: Or Shoval <7299abc34af50659adafa6d252dc9c537bb5cf36@redhat.com>

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