Merge pull request #1729 from edx/feanil/val_auth

Turn off Basic Auth for VAL API.

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/lms.j2

@@ -84,6 +84,13 @@ error_page {{ k }} {{ v }};
     try_files $uri @proxy_to_lms_app;
   }
 
+  # The VAL api is accessed using OAUTH2 which
+  # uses the authorization header so we can't have
+  # basic auth on it as well.
+  location /api/val {
+    try_files $uri @proxy_to_lms_app;
+  }
+
   location /notifier_api {
     try_files $uri @proxy_to_lms_app;
   }