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/factorio.libsonnet b/games/factorio/kube/factorio.libsonnet
index a02b69a..7a3a06f 100644
--- a/games/factorio/kube/factorio.libsonnet
+++ b/games/factorio/kube/factorio.libsonnet
@@ -83,14 +83,14 @@
 
     volumeClaimMods: kube.PersistentVolumeClaim(factorio.makeName("factorio-mods")) {
         metadata+: factorio.metadata,
-        storage: "1Gi",
-        storageClass: cfg.storageClassName,
+        storage:: "1Gi",
+        storageClass:: cfg.storageClassName,
     },
 
     volumeClaimData: kube.PersistentVolumeClaim(factorio.makeName("factorio")) {
         metadata+: factorio.metadata,
-        storage: "5Gi",
-        storageClass: cfg.storageClassName,
+        storage:: "5Gi",
+        storageClass:: cfg.storageClassName,
     },
 
     configMap: kube.ConfigMap(factorio.makeName("config")) {