Merge cockroachdb#129213

129213: cli: update cluster tag in tsdump upload r=aa-joshi a=aa-joshi

Previously, we are uploading tsdump data to datadog with cluster name with tag "cluster". However, it would coincide with metrics emitted with "cluster" as tag. This was resulting in a large drop down list to filter out cluster in datadog dashboard. This change updates tag from "cluster" to "cluster_label" with tsdump datadog upload. This would result in smaller cluster list in datadog dashboard.

Epic: None
Release note: None

Co-authored-by: Akshay Joshi <akshay@cockroachlabs.com>

pkg/cli/testdata/tsdump/json

@@ -31,4 +31,4 @@ cr.node.admission.admitted.elastic.cpu 2 1.000000 1711130560
 ----
 POST: https://example.com/data
 DD-API-KEY: api-key
-Body: {"series":[{"metric":"crdb.tsdump.admission.admitted.elastic.cpu","type":0,"points":[{"timestamp":17111304,"value":0},{"timestamp":17111304,"value":1},{"timestamp":17111304,"value":1},{"timestamp":17111305,"value":1}],"resources":null,"tags":["cluster_type:SELF_HOSTED","job:cockroachdb","region:local","cluster:test-cluster","upload_id:test-cluster-1234","node_id:1"]},{"metric":"crdb.tsdump.admission.admitted.elastic.cpu","type":0,"points":[{"timestamp":17111305,"value":1},{"timestamp":17111305,"value":1},{"timestamp":17111305,"value":1},{"timestamp":17111305,"value":1},{"timestamp":17111305,"value":1},{"timestamp":17111305,"value":1}],"resources":null,"tags":["cluster_type:SELF_HOSTED","job:cockroachdb","region:local","cluster:test-cluster","upload_id:test-cluster-1234","node_id:2"]}]}
+Body: {"series":[{"metric":"crdb.tsdump.admission.admitted.elastic.cpu","type":0,"points":[{"timestamp":17111304,"value":0},{"timestamp":17111304,"value":1},{"timestamp":17111304,"value":1},{"timestamp":17111305,"value":1}],"resources":null,"tags":["cluster_type:SELF_HOSTED","job:cockroachdb","region:local","cluster_label:test-cluster","upload_id:test-cluster-1234","node_id:1"]},{"metric":"crdb.tsdump.admission.admitted.elastic.cpu","type":0,"points":[{"timestamp":17111305,"value":1},{"timestamp":17111305,"value":1},{"timestamp":17111305,"value":1},{"timestamp":17111305,"value":1},{"timestamp":17111305,"value":1},{"timestamp":17111305,"value":1}],"resources":null,"tags":["cluster_type:SELF_HOSTED","job:cockroachdb","region:local","cluster_label:test-cluster","upload_id:test-cluster-1234","node_id:2"]}]}

pkg/cli/tsdump.go

@@ -449,7 +449,7 @@ func (d *datadogWriter) Emit(data *tspb.TimeSeriesData) error {
 	tags = append(tags, "region:local")
 
 	if debugTimeSeriesDumpOpts.clusterLabel != "" {
-		tags = append(tags, makeDDTag("cluster", debugTimeSeriesDumpOpts.clusterLabel))
+		tags = append(tags, makeDDTag("cluster_label", debugTimeSeriesDumpOpts.clusterLabel))
 	}
 
 	tags = append(tags, makeDDTag(uploadIDTag, d.uploadID))