Merge pull request #36 from xarses/fuel

Packaging Foo
Add details of configuration of the reassigning
Rename migration module to pump
Rename task to retirieve server for evacuation
Use event-based evacuation for pump command
Log events in the pump command
Prettify flow graphs
Merge remote-tracking branch master into cleanup-cmds
Add reassigning to the pump command
Remove unsed modules and requirements
Add evacuation and reassigning in CLI