Missing cluster label on SLM information

[cello86]

Hi All,
we configured a prometheus exporter (version 1.7.0) on our development cluster and we noticed that all metrics related to SLM don't provide a cluster label and this can be a problem if we filter on different cluster.

# TYPE elasticsearch_slm_stats_json_parse_failures counter
elasticsearch_slm_stats_json_parse_failures 0
# HELP elasticsearch_slm_stats_operation_mode Operating status of SLM
# TYPE elasticsearch_slm_stats_operation_mode gauge
elasticsearch_slm_stats_operation_mode{operation_mode="RUNNING"} 1
elasticsearch_slm_stats_operation_mode{operation_mode="STOPPED"} 0
elasticsearch_slm_stats_operation_mode{operation_mode="STOPPING"} 0
# HELP elasticsearch_slm_stats_retention_deletion_time_seconds Retention run deletion time
# TYPE elasticsearch_slm_stats_retention_deletion_time_seconds gauge
elasticsearch_slm_stats_retention_deletion_time_seconds 0
# HELP elasticsearch_slm_stats_retention_failed_total Total failed retention runs
# TYPE elasticsearch_slm_stats_retention_failed_total counter
elasticsearch_slm_stats_retention_failed_total 0
# HELP elasticsearch_slm_stats_retention_runs_total Total retention runs
# TYPE elasticsearch_slm_stats_retention_runs_total counter
elasticsearch_slm_stats_retention_runs_total 295
# HELP elasticsearch_slm_stats_retention_timed_out_total Total timed out retention runs
# TYPE elasticsearch_slm_stats_retention_timed_out_total counter
elasticsearch_slm_stats_retention_timed_out_total 0
# HELP elasticsearch_slm_stats_snapshot_deletion_failures_total Total snapshot deletion failures
# TYPE elasticsearch_slm_stats_snapshot_deletion_failures_total counter
elasticsearch_slm_stats_snapshot_deletion_failures_total{policy="fns-snapshot-daily"} 0
# HELP elasticsearch_slm_stats_snapshots_deleted_total Total snapshots deleted
# TYPE elasticsearch_slm_stats_snapshots_deleted_total counter
elasticsearch_slm_stats_snapshots_deleted_total{policy="fns-snapshot-daily"} 0
# HELP elasticsearch_slm_stats_snapshots_failed_total Total snapshots failed
# TYPE elasticsearch_slm_stats_snapshots_failed_total counter
elasticsearch_slm_stats_snapshots_failed_total{policy="fns-snapshot-daily"} 0
# HELP elasticsearch_slm_stats_snapshots_taken_total Total snapshots taken
# TYPE elasticsearch_slm_stats_snapshots_taken_total counter
elasticsearch_slm_stats_snapshots_taken_total{policy="fns-snapshot-daily"} 296
# HELP elasticsearch_slm_stats_total_scrapes Current total Elasticsearch SLM scrapes.
# TYPE elasticsearch_slm_stats_total_scrapes counter
elasticsearch_slm_stats_total_scrapes 2
# HELP elasticsearch_slm_stats_total_snapshot_deletion_failures_total Total snapshot deletion failures
# TYPE elasticsearch_slm_stats_total_snapshot_deletion_failures_total counter
elasticsearch_slm_stats_total_snapshot_deletion_failures_total 0
# HELP elasticsearch_slm_stats_total_snapshots_deleted_total Total snapshots deleted
# TYPE elasticsearch_slm_stats_total_snapshots_deleted_total counter
elasticsearch_slm_stats_total_snapshots_deleted_total 0
# HELP elasticsearch_slm_stats_total_snapshots_failed_total Total snapshots failed
# TYPE elasticsearch_slm_stats_total_snapshots_failed_total counter
elasticsearch_slm_stats_total_snapshots_failed_total 0
# HELP elasticsearch_slm_stats_total_snapshots_taken_total Total snapshots taken
# TYPE elasticsearch_slm_stats_total_snapshots_taken_total counter
elasticsearch_slm_stats_total_snapshots_taken_total 296
# HELP elasticsearch_slm_stats_up Was the last scrape of the Elasticsearch SLM endpoint successful.
# TYPE elasticsearch_slm_stats_up gauge

Is it possible to add this label on SLM metrics?

Thanks,
Marcello