cilium: documentation updates for direct routing encryption
cilium: documentation updates for direct routing encryption

Now that we support direct routing and etcd operator push documentation
updates.

Signed-off-by: John Fastabend <ee461b60978bea1c76b3018c0b89685175b248e2@gmail.com>

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