Mm 47648 check license expandable (#21770)

* [MM-47648] Handler for check if a subscription is expandable

* Mock cloud regenerate

* PR Webapp test purpose only

* [MM-47648] Refactor and tests for expand stats for a subscription

* Fix typos

* style fix

* has to be revert

* CWS URL to Spinwick

* new spinwick url

* target portal test

* Generate token instead of send licenseId

* Rename

* Rename methods

* Revert public key and cws url

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

model/client4.go

@@ -8213,6 +8213,19 @@ func (c *Client4) GetCloudCustomer() (*CloudCustomer, *Response, error) {
 	return cloudCustomer, BuildResponse(r), nil
 }
 
+func (c *Client4) GetExpandStats(licenseId string) (*SubscriptionExpandStatus, *Response, error) {
+	r, err := c.DoAPIGet(fmt.Sprintf("%s%s?licenseID=%s", c.cloudRoute(), "/subscription/expand", licenseId), "")
+	if err != nil {
+		return nil, BuildResponse(r), err
+	}
+	defer closeBody(r)
+
+	var subscriptionExpandable *SubscriptionExpandStatus
+	json.NewDecoder(r.Body).Decode(&subscriptionExpandable)
+
+	return subscriptionExpandable, BuildResponse(r), nil
+}
+
 func (c *Client4) GetSubscription() (*Subscription, *Response, error) {
 	r, err := c.DoAPIGet(c.cloudRoute()+"/subscription", "")
 	if err != nil {