fix replicate.yaml

[andreasjansson]

• workdir pointed to the evaluation directory, but the results_replicate.py file referenced modules from the root
• A couple missing dependencies
• External files (like weights etc) either have to be in a subdirectory of the replicated folder (though they don't have to be in git), or downloaded from the internet using the download
• I added an audio output type (documented here)

replicate check now fails with this internal Keras error: WARN[0020] File "/root/.pyenv/versions/3.6.10/lib/python3.6/site-packages/tensorflow/python/keras/engine/base_layer.py", line 2015, in __init__ WARN[0020] self.node_def = node_def_pb2.NodeDef.FromString(node_def) WARN[0020] TypeError: a bytes-like object is required, not 'dict'