refactor discovery

cmd/order/k8s-host-discovery.go

@@ -0,0 +1,9 @@
+package main
+
+import (
+	"git.k6n.net/mats/go-cart-actor/pkg/discovery"
+)
+
+func UseDiscovery(pool discovery.DiscoveryTarget) {
+	discovery.StartK8sDiscovery(podIp, "actor-pool=order", 30, pool)
+}