daemon: move setting of Node / datapath / health IPs to separate function
daemon: move setting of Node / datapath / health IPs to separate function

This makes `NewDaemon` smaller and easier to read.

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

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