fix for apiproduct access case issue (#628)

Author: divya-intelli

apigee_edge.module

@@ -515,7 +515,9 @@ function apigee_edge_api_product_access(EntityInterface $entity, $operation, Acc
   $result = AccessResult::allowedIfHasPermission($account, 'bypass api product access control');
   if ($result->isNeutral()) {
     // Attribute may not exists but in that case it means public.
-    $product_visibility = $entity->getAttributeValue('access') ?? 'public';
+    // Access attribute needs to be set to lower case
+    // to match the portal visibilities that is set in the config apigee_edge.api_product_settings.
+    $product_visibility = $entity->getAttributeValue('access') ? strtolower($entity->getAttributeValue('access')) : 'public';
     $visible_to_roles = \Drupal::config($config_name)->get('access')[$product_visibility] ?? [];
 
     // A user may not have access to this API product based on the current