Feature request per pod (#1946)

This feature enables routing more than one request to a pod at the same time. This is the first draft of the work and might involve more optimizations later.

pkg/fetcher/fetcher.go

@@ -76,7 +76,7 @@ func MakeFetcher(logger *zap.Logger, sharedVolumePath string, sharedSecretPath s
 		fLogger.Fatal("error creating shared config directory", zap.Error(err), zap.String("directory", sharedConfigPath))
 	}
 
-	fissionClient, kubeClient, _, err := crd.MakeFissionClient()
+	fissionClient, kubeClient, _, _, err := crd.MakeFissionClient()
 	if err != nil {
 		return nil, errors.Wrap(err, "error making the fission / kube client")
 	}