Fix ilm metric labels (prometheus-community#677)

The metric labels in the prometheus description were set to all 3 status options, instead of the name of the status label. The code exports a metric for each of the statuses individually, not all 3 at the same time.

fixes prometheus-community#677

Signed-off-by: Joe Adams <[email protected]>

Author: sysadmind

collector/ilm_status.go

@@ -79,7 +79,7 @@ func NewIlmStatus(logger log.Logger, client *http.Client, url *url.URL) *IlmStat
 			Desc: prometheus.NewDesc(
 				prometheus.BuildFQName(namespace, subsystem, "status"),
 				"Current status of ilm. Status can be STOPPED, RUNNING, STOPPING.",
-				ilmStatuses, nil,
+				[]string{"operation_mode"}, nil,
 			),
 			Value: func(ilm *IlmStatusResponse, status string) float64 {
 				if ilm.OperationMode == status {