Using addCleanup() for removing the pending volume transfer request
has no way to wait for the volume status to become available before
cleaning up the volume and gets racy when the tests are run with
slow performance in the volume backend. So we pause at the end of
the test after either accepting the transfer request or explicitly
deleting it so the cleanup can delete the volume.
Change-Id: I04862069cab28bc76eeafd60ba32be646f478d86
Signed-off-by: Dean Troyer <dtroyer@gmail.com>
1a0bef2b46