bgp: remove informer resync, server side filter node listings
bgp: remove informer resync, server side filter node listings

this commit removes the informer resyncing for all informers the BGP
control plane utilizes.

additionally, this commit constructs the shared informer with a tweak
list ensuring it only caches and sends watch events for the k8s node we
are hosted on.

Signed-off-by: Louis DeLosSantos <e7ae6d6e1769b56e461abca13c275680721e78d7@isovalent.com>

cilium/cilium,michi-covalent/cilium,cilium/cilium,michi-covalent/cilium,michi-covalent/cilium,cilium/cilium,cilium/cilium,cilium/cilium,michi-covalent/cilium,michi-covalent/cilium