Refactoring (#84)

* Only use one channel for filtering HARs.

* Only check if dest is service ip if message is outgoing.

* Parse direction flag on input.

* Renamed filterHarHeaders -> filterHarItems.

* Fixed compilation bugs.

cli/cmd/tapRunner.go

@@ -121,7 +121,7 @@ func createMizuTappers(ctx context.Context, kubernetesProvider *kubernetes.Provi
 		fmt.Sprintf("%s.%s.svc.cluster.local", aggregatorService.Name, aggregatorService.Namespace),
 		nodeToTappedPodIPMap,
 		mizuServiceAccountExists,
-		tappingOptions.Direction,
+		tappingOptions.TapOutgoing,
 	); err != nil {
 		fmt.Printf("Error creating mizu tapper daemonset: %v\n", err)
 		return err