* Moved code for evaluation of policy peers into separate func to avoid code duplication
* Ensured fallback to policy namespace, if namespaceSelector is not set
* use strconv for converting int64 to string
* change order of pod-fw sync, chain items has to be added before jumping to the chain starts
* added logging of syncversion, decreased logging verbosity+severity for planned chain cleanups
* Instead of clearing the iptables firewall chains for each resync, new chains are now generated side-by-side with the existing ones.
* Chain naming now has an addition component, version, which ensures chain name uniqueness.
* Existing cleanup procedure for stale iptables rules will handle garbage collection of unused chains.
