External replica proxy

gateway/requests/requests.go

@@ -73,6 +73,6 @@ type PrometheusAlert struct {
 type Function struct {
 	Name            string  `json:"name"`
 	Image           string  `json:"image"`
-	InvocationCount float64 `json:"invocationCount"`
+	InvocationCount float64 `json:"invocationCount"` // TODO: shouldn't this be int64?
 	Replicas        uint64  `json:"replicas"`
 }