prometheus-rules: PF-1547 add NginxAlertreceiverTooMany400s; remove...
prometheus-rules: PF-1547 add NginxAlertreceiverTooMany400s; remove NginxAlertreceiverNonPOSTHTTPRequests
prometheus-rules: PF-1547 add NginxAlertreceiverTooMany400s; remove NginxAlertreceiverNonPOSTHTTPRequests