Add $ to end of machine account uid

[Phil Mayers]

>   PEAP: Setting User-Name to host/itf-toshiba-asd

See my previous emails - your original config was correct. Don't use
rlm_attr_rewrite. the %{mschap:User-Name} was working, and FreeRadius
sent an Access-Accept. If your machines aren't getting on-net, it's a
NAS problem.