add cluster:infrastructure_topology:info recording rule

This very simple recording rule is used as a telemetry signal. This is
best done via a recording rule so that non-relevant labels can be
aggregated and thus reduce the cardinality in our telemetry storage.

Signed-off-by: Jan Fajerski <[email protected]>

Author: jan--f

manifests/0000_90_kube-apiserver-operator_03_servicemonitor.yaml

@@ -59,3 +59,5 @@ spec:
     rules:
       - expr: sum by(mode) (cluster_controlplane_topology)
         record: cluster:controlplane_topology:info
+      - expr: sum by(mode) (cluster_infrastructure_topology)
+        record: cluster:infrastructure_topology:info