cmd: add documentation and TODO for updatePolicyKey
cmd: add documentation and TODO for updatePolicyKey

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

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