This has been sporadically failing in functional tests due to the way
the volume qos spec list command calls get_associations() for each spec.
When tests run in parallel occasionally a spec from another test is present
in the list returned and is deleted before the get_associations() call is
made, causing a NotFound exception. We should just keep going when this
occurs.
* make v1 match v2
* add tests to ensure the exception is being caught and handled
Closes-Bug: #1687083
Change-Id: If2d17c1deb53d293fc2c7f0c527a4e4ef6f69976
2c5405ed5e