kube: clean up PersistentVolumeClaims

There's no difference as far as jsonnet is concerned, but it may confuse newbies, as Service and SimpleIngress use double colon for its top-level kube helpers. This also removes any ambiguity as to whether this is manifested in final JSON. So we can make that a convention.

Change-Id: I01ad4ea63f4d5d8ee6e5d41c79637ba186548c6f
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1803
Reviewed-by: q3k <q3k@hackerspace.pl>
diff --git a/games/factorio/kube/proxy.libsonnet b/games/factorio/kube/proxy.libsonnet
index a25ba7c..4d94fb3 100644
--- a/games/factorio/kube/proxy.libsonnet
+++ b/games/factorio/kube/proxy.libsonnet
@@ -13,8 +13,8 @@
         metadata+: {
             namespace: cfg.namespace,
         },
-        storage: "32Gi",
-        storageClass: "waw-hdd-redundant-3",
+        storage:: "32Gi",
+        storageClass:: "waw-hdd-redundant-3",
     },
     deploy: kube.Deployment("proxy") {
         metadata+: {