[skip e2e]Add log for ListNode in indexcoord (#14222)

Signed-off-by: Cai.Zhang <cai.zhang@zilliz.com>

internal/indexcoord/node_manager.go

@@ -144,6 +144,7 @@ func (nm *NodeManager) ListNode() []UniqueID {
 	for _, id := range clientIDs {
 		memory := nm.pq.GetMemory(id)
 		if memory == 0 {
+			log.Debug("IndexCoord get IndexNode metrics info", zap.Int64("nodeID", id))
 			req, err := metricsinfo.ConstructRequestByMetricType(metricsinfo.SystemInfoMetrics)
 			if err != nil {
 				log.Error("create metrics request failed", zap.Error(err))