With CloudNativePG 1.18 we have basically moved the most important aspects of cnpg-sandbox inside the main project. In particular:

• installing Prometheus and Grafana for evaluation
• deploying default metric (now included in CloudNativePG itself)
• installing a base Grafana dashboard
• deploying some basic rules for alerting
• running pgbench

For details, see:

• https://cloudnative-pg.io/documentation/1.18/quickstart/#part-4-monitor-clusters-with-prometheus-and-grafana
• https://cloudnative-pg.io/documentation/1.18/monitoring/#auxiliary-resources
• https://cloudnative-pg.io/documentation/1.18/cnpg-plugin/#benchmarking-the-database-with-pgbench

After all, cnpg-sandbox was born as an experimentation project to prototype the above resources. The only missing part is to run fio, which will be included in #952 but it is not a critical component.

Please remove cnpg-sandbox from the code and document the above.