MM-37033 - update product model to match with customer web server (#17967)

Co-authored-by: Pablo Velez Vidal <pablo.velez@mattermost.com>

model/cloud.go

@@ -24,6 +24,20 @@ const (
 	BillingSchemeFlatFee = BillingScheme("flat_fee")
 )
 
+type RecurringInterval string
+
+const (
+	RecurringIntervalYearly  = RecurringInterval("year")
+	RecurringIntervalMonthly = RecurringInterval("month")
+)
+
+type SubscriptionFamily string
+
+const (
+	SubscriptionFamilyCloud  = SubscriptionFamily("cloud")
+	SubscriptionFamilyOnPrem = SubscriptionFamily("on-prem")
+)
+
 // Product model represents a product on the cloud system.
 type Product struct {
 	ID                string             `json:"id"`
@@ -31,6 +45,10 @@ type Product struct {
 	Description       string             `json:"description"`
 	PricePerSeat      float64            `json:"price_per_seat"`
 	AddOns            []*AddOn           `json:"add_ons"`
+	SKU               string             `json:"sku"`
+	PriceID           string             `json:"price_id"`
+	Family            SubscriptionFamily `json:"product_family"`
+	RecurringInterval RecurringInterval  `json:"recurring_interval"`
 	BillingScheme     BillingScheme      `json:"billing_scheme"`
 }