FIDO U2F facet fiel headers

nginx/nginx.conf

@@ -125,6 +125,11 @@ http {
   # for the check. It is best if you enable this in a location{} block for
   # a specific directory, or on an individual server{} level.
   # gzip_static on;
+  
+  # Content type for FIDO U2F facets
+  map $uri $fido_content_type {
+    default "application/fido.trusted-apps+json";
+  }
 
   # Include files in the sites-enabled folder. server{} configuration files should be
   # placed in the sites-available folder, and then the configuration should be enabled