Adapt the l2 validator test to k8s 1.11 which has two dns servers
Adapt the l2 validator test to k8s 1.11 which has two dns servers

brecode/vpp,brecode/vpp,rastislavszabo/vpp,rastislavszabo/vpp,milanlenco/vpp-1,brecode/vpp,brecode/vpp,rastislavszabo/vpp,milanlenco/vpp-1,milanlenco/vpp-1,milanlenco/vpp-1,milanlenco/vpp-1,rastislavszabo/vpp,brecode/vpp,rastislavszabo/vpp,rastislavszabo/vpp,rastislavszabo/vpp