[WIP] StateTest tracer using docker images for parity, cpp, geth

[cdetrio]

Work-in-progress, don't merge.

Docker images for standardized tracing (ethereum/tests#249) install these branches:
https://github.com/cdetrio/parity/tree/evmlab-trace
https://github.com/cdetrio/cpp-ethereum/tree/evmlab-trace
https://github.com/cdetrio/go-ethereum/tree/evmlab-trace
https://github.com/cdetrio/pyethereum/tree/evmlab-trace

# build cpp docker image
cd containers/std-cpp-ethereum && docker build --no-cache . -t cdetrio/cpp-ethereum

# build parity docker image
cd containers/std-parity && docker build --no-cache . -t cdetrio/parity

# build geth docker image
cd containers/std-geth && docker build --no-cache . -t cdetrio/geth

# build python docker image
cd containers/pyethereum && docker build --no-cache . -t cdetrio/pyethereum

[holiman]

Added you as collaborator, feel free to merge this when you think it's time