test/k8sT: move creation / deletion of resources outside `It`
test/k8sT: move creation / deletion of resources outside `It`

Do so for the vxlan test.

Signed-off by: Ian Vernon <ian@cilium.io>

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