Delete cluster with is metrics

[aurelien43]

Hello, When i have a cluster with his metrics, if I delete this cluster whit the commande 'pgo delete cluster', I still see it in the grafana dashboard : 'postgresql-overview'.

So How to delete a cluster with his metrics or delete metrics after deleting a cluster?

Please tell us about your environment:

• Operating System: centos7
• Where is this running ( Local, Cloud Provider): Local
• Storage being used (NFS, Hostpath, Gluster, etc): CSI (SAN)
• Container Image Tag: centos7-12.4-4.5.0
• PostgreSQL Version: 12.4
• Platform (Docker, Kubernetes, OpenShift): Kubernetes
• Platform Version: 1.17

[jkatz]

Please see #2031 for commentary on this.