PrometheusRule.spec.groups[].rules[].for

Alerts are considered firing once they have been returned for this long.

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