Add a system for tests to register objects for deletion.
Add a system for tests to register objects for deletion.

They should be deleted no matter the outcome of
the test.
coderanger/pychef,dipakvwarade/pychef,cread/pychef,coderanger/pychef,Scalr/pychef,dipakvwarade/pychef,Scalr/pychef,jarosser06/pychef,cread/pychef,jarosser06/pychef