Prometheus.spec.retention

How long to retain the Prometheus data. Default: "24h" if `spec.retention` and `spec.retentionSize` are empty.

• pattern: ^(0|(([0-9]+)y)?(([0-9]+)w)?(([0-9]+)d)?(([0-9]+)h)?(([0-9]+)m)?(([0-9]+)s)?(([0-9]+)ms)?)$