jsonnet/kube-prometheus/addons: reduce KSM cardinality by denylisting unused metrics

Signed-off-by: paulfantom <pawel@krupa.net.pl>

jsonnet/kube-prometheus/addons/ksm-lite.libsonnet

@@ -0,0 +1,39 @@
+local addArgs(args, name, containers) = std.map(
+  function(c) if c.name == name then
+    c {
+      args+: args,
+    }
+  else c,
+  containers,
+);
+
+{
+  kubeStateMetrics+: {
+    deployment+: {
+      spec+: {
+        template+: {
+          spec+: {
+            containers: addArgs(
+              [|||
+                --metric-denylist=
+                kube_*_created,
+                kube_*_metadata_resource_version,
+                kube_replicaset_metadata_generation,
+                kube_replicaset_status_observed_generation,
+                kube_pod_restart_policy,
+                kube_pod_init_container_status_terminated,
+                kube_pod_init_container_status_running,
+                kube_pod_container_status_terminated,
+                kube_pod_container_status_running,
+                kube_pod_completion_time,
+                kube_pod_status_scheduled
+              |||],
+              'kube-state-metrics',
+              super.containers
+            ),
+          },
+        },
+      },
+    },
+  },
+}