Add cluster logging to CnsFileAccessConfig admission handler

Enhance debugging capabilities by adding comprehensive cluster logging
in the CnsFileAccessConfig validation process. Logs display the total
number of clusters found and detailed information for each cluster
including name and namespace.

This logging will help diagnose cluster detection issues during
CnsFileAccessConfig operations and improve troubleshooting capabilities
for file share access validation scenarios.

Signed-off-by: ab002488 <anuj.bansal@broadcom.com>

Author: anuj087

pkg/syncer/admissionhandler/validate_cnsfileaccessconfig.go

@@ -345,6 +345,13 @@ func getExpectedProviderServiceAccountName(ctx context.Context) (string, error)
 		return "", err
 	}
 
+	// Log cluster information for debugging
+	log := logger.GetLogger(ctx)
+	log.Infof("Found %d clusters in clusterList", len(clusterList.Items))
+	for i, cluster := range clusterList.Items {
+		log.Infof("Cluster %d: Name=%s, Namespace=%s", i+1, cluster.Name, cluster.Namespace)
+	}
+	
 	// If there's exactly one cluster, use it (typical in guest cluster scenario)
 	if len(clusterList.Items) == 1 {
 		cluster := clusterList.Items[0]
@@ -369,6 +376,13 @@ func validateAgainstAllClusters(ctx context.Context, serviceAccountName string)
 		return false, fmt.Errorf("failed to list clusters: %w", err)
 	}
 
+	// Log cluster information for debugging  
+	log := logger.GetLogger(ctx)
+	log.Infof("Found %d clusters in clusterList for service account validation", len(clusterList.Items))
+	for i, cluster := range clusterList.Items {
+		log.Infof("Cluster %d: Name=%s, Namespace=%s", i+1, cluster.Name, cluster.Namespace)
+	}
+	
 	// Check if the service account name matches any cluster's expected ProviderServiceAccount name
 	for _, cluster := range clusterList.Items {
 		// Following reference: fmt.Sprintf("%s-%s", vsphereCluster.Name, "pvcsi")