Add undertow-edge framework

Latest undertow with native xnio implementation instead of NIO2.
sync code with undertow test & fix setup.py
Merge branch 'edge' of https://github.com/ctomc/FrameworkBenchmarks into PR738
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.