test: Allow Cilium 1.4 to be run with K8s 1.14
test: Allow Cilium 1.4 to be run with K8s 1.14

This commit makes it possible to run upgrade tests on k8s 1.14 with
Cilium 1.4.

Signed-off-by: Martynas Pumputis <6b0d31c0d563223024da45691584643ac78c96e8@lambda.lt>

cilium/cilium,tgraf/cilium,cilium/cilium,cilium/cilium,tgraf/cilium,tklauser/cilium,tklauser/cilium,cilium/cilium,tklauser/cilium,tgraf/cilium,michi-covalent/cilium,michi-covalent/cilium,tgraf/cilium,cilium/cilium,michi-covalent/cilium,tklauser/cilium,tklauser/cilium,michi-covalent/cilium,tgraf/cilium,tgraf/cilium,cilium-team/cilium,cilium-team/cilium,michi-covalent/cilium