docker-compose.yml: Update bridge and wipe old eth-bridge configs before start. (#103)
docker-compose.yml: Update bridge and wipe old eth-bridge configs before start. (#103)

The latest eth-bridge contains 180 sec timeout change, and was upgraded to 0.6.0.
Configs are wiped to avoid a situation when the bridge restarts and keeps the old one.
In that situation the script would time out on Travis.

Refs: MARKET.js #33
MarketProject/MarketProtocol,MarketProject/MarketProtocol