bugtool: Dump NAT BPF maps entries with bpftool
bugtool: Dump NAT BPF maps entries with bpftool

If "cilium bpf nat list" fails, then we will be able to rely to
the raw dumps when debugging.

Signed-off-by: Martynas Pumputis <6b0d31c0d563223024da45691584643ac78c96e8@lambda.lt>

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