ops/monitoring: split up jsonnet, add simple docs

Change-Id: I8120958a6862411de0446896875766834457aba9
diff --git a/ops/monitoring/k0.jsonnet b/ops/monitoring/k0.jsonnet
new file mode 100644
index 0000000..028a463
--- /dev/null
+++ b/ops/monitoring/k0.jsonnet
@@ -0,0 +1,11 @@
+local lib = import "lib.libsonnet";
+
+{
+    cluster: lib.Cluster("k0") {
+        cfg+: {
+            storageClasses+: {
+                prometheus: "waw-hdd-redundant-3",
+            },
+        },
+    },
+}