Fix outstanding issues with startcluster
Fix outstanding issues with startcluster

This fixes
- the bootstrap enodes
- the shutdown handler
- the coinbase for the miner

tomaaron/raiden,tomaaron/raiden,hackaugusto/raiden,tomashaber/raiden,tomaaron/raiden,hackaugusto/raiden,tomashaber/raiden,tomashaber/raiden,charles-cooper/raiden,charles-cooper/raiden,tomaaron/raiden,tomashaber/raiden,tomashaber/raiden