tree a688b51b9d05aa0c60546b0ff7f559144056c9d9
parent 7366970453d13e41ffdc911b205766ba834e2ccc
author Matthew Treinish <treinish@linux.vnet.ibm.com> 1386975455 +0000
committer Yair Fried <yfried@redhat.com> 1404383870 +0300

Convert scenario test tearDown to addCleanup

This commit removes the resource management code used in the scenario
tests and replaces it with addCleanup. The tearDownClass code created
a LIFO queue for deleting resources created during tests which is
exactly what addCleanup is used for. Additionally, the previous
tearDownClass code only worked for objects created, and couldn't
undo actions such as volume attach which changed the resource state.
addCleanup doesn't have that limitation.

To handle async delete actions a list of waits is added which will be iterated
 over as the last step of clearing the addCleanup queue. That way all the
delete calls are made up front and the tests won't succeed unless the deletes
are eventually successful. This is the same basic approach used in the api
tests to limit cleanup execution time except here it is multi-resource, because
of the nature of the scenario tests.

Change-Id: I315c9c67a70ab6a209d4996e2926a8a2d06c9bc1