Simplify a bit of log formatting.

pkg/controller/ingress.go

@@ -1013,16 +1013,11 @@ func (worker *NamespaceWorker) ings2OffloaderSpec(
 }
 
 func ingsArrayString(ings []*net_v1.Ingress) string {
-	var s strings.Builder
-	s.WriteRune('[')
-	for _, ing := range ings {
-		s.WriteRune(' ')
-		s.WriteString(ing.Namespace)
-		s.WriteRune('/')
-		s.WriteString(ing.Name)
+	ingStrings := make([]string, len(ings))
+	for i, ing := range ings {
+		ingStrings[i] = ing.Namespace + "/" + ing.Name
 	}
-	s.WriteString(" ]")
-	return s.String()
+	return strings.Join(ingStrings, " ")
 }
 
 // Update the status.loadBalancer field of each suuccessfully synced