add radosgw bucket for spark

Change-Id: Id8ea8901ce038ccbf11afabe0e6272c358b32cf2

cluster/kube/k0.libsonnet

@@ -314,6 +314,17 @@ local rook = import "lib/rook.libsonnet";
                         displayName: "cz2-arma3mods",
                     },
                 },
+                # Buckets for spark pipelines
+                # TODO(implr): consider a second yolo-backed one for temp data
+                implrSparkWaw3: kube.CephObjectStoreUser("implr-spark") {
+                    metadata+: {
+                        namespace: "ceph-waw3",
+                    },
+                    spec: {
+                        store: "waw-hdd-redundant-3-object",
+                        displayName: "implr-spark",
+                    },
+                },
             },
         },