MON-3895: Add tempo operator metrics

[rubenvp8510]

• [ ] I added CHANGELOG entry for this change.
• [x] No user facing changes, so no entry in CHANGELOG was needed.

[simonpasquier]

/retitle MON-3895: Add tempo operator metrics

[openshift-ci-robot]

@rubenvp8510: This pull request references MON-3895 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the task to target the "4.17.0" version, but no target version was set.

In response to [this](https://github.com/openshift/cluster-monitoring-operator/pull/2421): > > >* [ ] I added CHANGELOG entry for this change. >* [x] No user facing changes, so no entry in CHANGELOG was needed. > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Fcluster-monitoring-operator). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[rubenvp8510]

Hello @simonpasquier I renamed this to match the recording rules

Those are the rules defined in the tempo bundle:

apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  labels:
    app.kubernetes.io/managed-by: operator-lifecycle-manager
    app.kubernetes.io/name: tempo-operator
    app.kubernetes.io/part-of: tempo-operator
  name: tempo-operator-tempo-operator-prometheus-rules
spec:
  groups:
  - name: tempo-operator-monitoring.rules
    rules:
    - expr: sum by (type) (tempo_operator_tempostack_storage_backend)
      record: type:tempo_operator_tempostack_storage_backend:sum
    - expr: sum by (state) (tempo_operator_tempostack_managed)
      record: state:tempo_operator_tempostack_managed:sum
    - expr: sum by (type) (tempo_operator_tempostack_multi_tenancy)
      record: enabled:tempo_operator_tempostack_multi_tenancy:sum
    - expr: sum by (enabled) (tempo_operator_tempostack_jaeger_ui)
      record: enabled:tempo_operator_tempostack_jaeger_ui:sum

Let me know if this is enough for proceed and merge this PR. Thank you very much for taking care of this!

[rubenvp8510]

/retest-required

[rubenvp8510]

/retest

[rubenvp8510]

/retest

[rubenvp8510]

@simonpasquier I think this is ready

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: rubenvp8510, simonpasquier

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[openshift-ci-robot]

/retest-required

Remaining retests: 0 against base HEAD 0cffd8a3c81c0f7271912b20e086ab7de5e2eba9 and 2 for PR HEAD 4cdc66710c12b2492566c5546d38765d7ce3590e in total

[openshift-ci[bot]]

@rubenvp8510: all tests passed!

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[openshift-bot]

[ART PR BUILD NOTIFIER]

Distgit: cluster-monitoring-operator This PR has been included in build cluster-monitoring-operator-container-v4.18.0-202408272341.p0.gf7e92e8.assembly.stream.el9. All builds following this will include this PR.