Tests a matrix of options:
- local/remote negotiation initiator
- 'most' bundle-policy combinations (some combinations will never work)
- firefox or chrome browser
Across 4 test scenarios:
- simple negotiation with default browser streams (or none if gstreamer
initiates)
- sending a vp8 stream
- opening a data channel
- sending a message over the data channel
for a total of 112 tests!
