cluster/kube: remove ceph diff against k0 production

This now has a zero diff against prod.

location fields in CephCluster.storage.nodes seem to have been removed
from the CRD at some point. Not sure how the CRUSH tree now gets
populated, but whatever, it's been working like this for a while
already. Same for CephObjectStore.gateway.type.

The Rook Operator has been zero-scaled for a while now due to b/6.

Change-Id: I30a836f273f4c1529f60fa9297c96b7aac412f59
diff --git a/cluster/kube/cluster.libsonnet b/cluster/kube/cluster.libsonnet
index 6e9da28..fb0456c 100644
--- a/cluster/kube/cluster.libsonnet
+++ b/cluster/kube/cluster.libsonnet
@@ -212,7 +212,7 @@
         rook: rook.Operator {
             operator+: {
                 spec+: {
-                    replicas: 1,
+                    replicas: 0,
                 },
             },
         },