Improve error handling in StopInstance handler

* 409s for store comparison errors on ActualLRP removal
* 500s for all other errors

[#83638702]

Signed-off-by: Michael Fraenkel <fraenkel@us.ibm.com>
Make fake gatherer test minimal

[#83638702]

Signed-off-by: Michael Fraenkel <fraenkel@us.ibm.com>
LRP processor deletes containers when claim or start fails

* Add test suite for ActualLRPFromContainer

[#83638702]

Signed-off-by: Michael Fraenkel <fraenkel@us.ibm.com>
Move logger in test setup

[#83638702]

Signed-off-by: Atul Kshirsagar <atul.kshirsagar@gmail.com>