Fixed issues with Yard persistence

All LaneStacks in SaltRaet now have unique names so there are no namespace collisons when persisting Yard data.

Added support for basedirpath to Stacks to provide default way to ensure stack name is part of dirpath for keep files

Added closer behaviors to close lane stacks opened by Master miniion and workers.
Still not closing event lanestacks

Still not closing for sure workers depending on how the process shutsdown.

Fixed the problem with stacktrace for race condition opening lane stacks. This is solved by the unique keeep names