Ability to add labels and annotations to prometheus rules from PrometheusRule CR

[gberche-orange]

What is missing?

Ability to add labels and annotations to prometheus rules from PrometheusRule CR

Why do we need it?

adding onto an existing off-the-shelf prometheus alert such as host-and-hardware/node-exporter.yml

1) a set of prometheus alert rule label such as the followings:

• source: awesome-prometheus-alerts: the source authoring for this alert
• local-operators-adoption: alpha: how much confidence/experience the current operation teams has on this alert

This is then used in the prometheus alert manager to group/filter out alerts from a new source, or of yet low confidence (despites their contributed severity level)

2) a set of prometheus alert rules annotations such as the followings:

• source_url: https://github.com/samber/awesome-prometheus-alerts/blob/master/dist/rules/host-and-hardware/node-exporter.yml: used by operators to access the git history of an alert definition, create issues, or PR for refinements

Environment

• Prometheus Operator version:

https://github.com/prometheus-operator/prometheus-operator/releases/tag/v0.59.2

Anything else we need to know?:

See more details in the conversation at https://github.com/prometheus-operator/prometheus-operator/issues/4495#issuecomment-1251026056

[JoaoBraveCoding]

/assign

[simonpasquier]

relates to #7135