Set consensus parameter CircuitPriorityHalflife to enable the EWMA circuit policy
So turns out that Chutney is not using EWMA policy at all for circuit priority which means that its been using the default policy which is round robin.
I found this by working on a patch that for testing was assert()ing on the
cmux->policy and it exploded.
cell_ewma_set_scale_factor() on how the EWMA policy is enabled/disabled.
The real network sets: