edge: pass edge version to filterIceServers
edge: pass edge version to filterIceServers

fixes https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/discuss-webrtc/ofLhvxSeTcs/qSAxgR1BBQAJ

Acidburn0zzz/adapter,Acidburn0zzz/adapter,Acidburn0zzz/adapter,webrtc/adapter,webrtc/adapter