MM-14590: Adds license check to LDAP test and LDAP sync API endpoints. (#10519)

* MM-14590: Adds license check to LDAP test and LDAP sync API endpoints.

* MM-14590: Improves the LdapSync and LdapTest API tests.

api4/ldap.go

@@ -33,6 +33,11 @@ func (api *API) InitLdap() {
 }
 
 func syncLdap(c *Context, w http.ResponseWriter, r *http.Request) {
+	if c.App.License() == nil || !*c.App.License().Features.LDAP {
+		c.Err = model.NewAppError("Api4.syncLdap", "api.ldap_groups.license_error", nil, "", http.StatusNotImplemented)
+		return
+	}
+
 	if !c.App.SessionHasPermissionTo(c.App.Session, model.PERMISSION_MANAGE_SYSTEM) {
 		c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
 		return
@@ -44,6 +49,11 @@ func syncLdap(c *Context, w http.ResponseWriter, r *http.Request) {
 }
 
 func testLdap(c *Context, w http.ResponseWriter, r *http.Request) {
+	if c.App.License() == nil || !*c.App.License().Features.LDAP {
+		c.Err = model.NewAppError("Api4.testLdap", "api.ldap_groups.license_error", nil, "", http.StatusNotImplemented)
+		return
+	}
+
 	if !c.App.SessionHasPermissionTo(c.App.Session, model.PERMISSION_MANAGE_SYSTEM) {
 		c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
 		return