plugins/cilium-cni: rely on flannel response
plugins/cilium-cni: rely on flannel response

With CNI chaining, the response from the previous CNI plugin, flannel,
is sent to the previous CNI plugin, Cilium, we can rely on the
flannel response to create a Cilium endpoint instead of entering the
network namespace of the container.

Signed-off-by: André Martins <bc9800b9d52a24cce72a73dd528afed53f10e5fc@cilium.io>

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