kube: add target:: convenience field to Service

Change-Id: If69116d93b6074136a36d98973e1aa997e2ebbef
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1802
Reviewed-by: q3k <q3k@hackerspace.pl>
diff --git a/app/inventory/prod.jsonnet b/app/inventory/prod.jsonnet
index d8ecdf8..eb08009 100644
--- a/app/inventory/prod.jsonnet
+++ b/app/inventory/prod.jsonnet
@@ -84,7 +84,7 @@
   },
 
   service: top.ns.Contain(kube.Service(cfg.name)) {
-    target_pod:: top.deployment.spec.template,
+    target:: top.deployment,
   },
 
   ingress: top.ns.Contain(kube.SimpleIngress(cfg.name)) {