PR738 Not sure why, but this needed to be remade

Seems the python json parser was not happy with the invisibile
change made to the first line's opening object brace. I have no
idea why, but when I replaced the file with the raw contents of
the file and saved, something was changed and it seemed to fix
the problem.

undertow-edge/benchmark_config

@@ -1,5 +1,5 @@
-{
-  "framework": "undertow-edge",
+
+rk": "undertow-edge",
   "tests": [{
     "default": {
       "setup_file": "setup",
@@ -86,3 +86,4 @@
     }
   }]
 }
+