policy: make ResolveCIDRPolicy have ruleSlice receiver
policy: make ResolveCIDRPolicy have ruleSlice receiver

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

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