With the previous logic, if a pod changed from having HostNetwork =
False to HostNetwork = True, NPC would not trigger a refresh to clear
out the rules that once applied. Now this check has been moved lower in
the fullPolicySync() logic so that it accounts for these pods naturally.
Check if the Pod is actionable before taking NetworkPolicy actions which
includes both adding KUBE-POD-FW and KUBE-NWPLCY chains for it.
Checks have now been consolidated to a single isNetPolActionable()
function which checks for pod phases that we don't want NetworkPolicy
for like: Failed, Completed, and Succeeded, missing pod IP addresses,
and pods with HostNetwork enabled.
fixes#1056
