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/app/onlyoffice/prod.jsonnet b/app/onlyoffice/prod.jsonnet
index 6919b1a..dcb8036 100644
--- a/app/onlyoffice/prod.jsonnet
+++ b/app/onlyoffice/prod.jsonnet
@@ -19,8 +19,8 @@
         ns: kube.Namespace(cfg.namespace),
 
         pvc: oo.ns.Contain(kube.PersistentVolumeClaim("documentserver")) {
-            storage: "10Gi",
-            storageClass: cfg.storageClassName,
+            storage:: "10Gi",
+            storageClass:: cfg.storageClassName,
         },
 
         deploy: oo.ns.Contain(kube.Deployment("documentserver")) {