resource: Make the resource lazy by default
resource: Make the resource lazy by default

For some resource kinds we only have observers if a feature has been
enabled. Rather than guarding the creating of resource based on a set
of "enabled" flags, make the resource lazy and only start the informer
when the first observer (or call to Store()) is seen.

Signed-off-by: Jussi Maki <815a75beb28872a948187eedbc7c4f9d2497c924@isovalent.com>

cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium