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/mastodon/kube/mastodon.libsonnet b/app/mastodon/kube/mastodon.libsonnet
index eac66fd..025eef8 100644
--- a/app/mastodon/kube/mastodon.libsonnet
+++ b/app/mastodon/kube/mastodon.libsonnet
@@ -276,11 +276,11 @@
     },
 
     svcWeb: ns.Contain(kube.Service("web")) {
-        target_pod: app.web.spec.template,
+        target:: app.web,
     },
 
     svcStreaming: ns.Contain(kube.Service("streaming")) {
-        target_pod: app.streaming.spec.template,
+        target:: app.streaming,
     },