Description of problem:

When querying for the ALERTS metric that is generated for the alert rule "ViolatedPolicyReport", there isn't a "cluster" label available to filter the alert by cluster. The user will need to know the cluster ID in order for them to filter for the correct cluster.

Version-Release number of selected component (if applicable):

2.7+

How reproducible:

Always

Steps to Reproduce:

1. Deploy ACM 2.7+ on cluster.
2. Enable Observability.
3. View ALERTS metric in Observability Grafana.
4. Filter for alertname="ViolatedPolicyReport"
5. Verify that the "cluster" label is not available. (Only clusterID and managedClusterID)

Actual results:

The "cluster" label is missing within the ALERTS{alertname="ViolatedPolicyReport"} time series; however, the label is available for the other alerts.

Expected results:

The "ViolatedPolicyReport" alert should contain the "cluster" label.

Additional info:

Screenshots are available to show the missing labels.