improve readability

Signed-off-by: Daniel Sabsay <[email protected]>

Author: Daniel Sabsay

pkg/ring/model.go

@@ -479,13 +479,13 @@ func (d *Desc) Clone() interface{} {
 func (d *Desc) getTokensInfo() map[uint32]instanceInfo {
 	out := map[uint32]instanceInfo{}
 
-	keys := []string{}
-	for key, _ := range d.Ingesters {
-		keys = append(keys, key)
+	instanceIDs := []string{}
+	for key := range d.Ingesters {
+		instanceIDs = append(instanceIDs, key)
 	}
-	sort.Strings(keys)
+	sort.Strings(instanceIDs)
 
-	for _, instanceID := range keys {
+	for _, instanceID := range instanceIDs {
 		instance := d.Ingesters[instanceID]
 		info := instanceInfo{
 			InstanceID: instanceID,