Remove the use of class setup/teardown from volume transfer functional tests
as that just doesn't work too well here. Also wait for volume status before
attempting transfer request operations, some test nodes take a while to
create the volumes.
Change-Id: Ib9378ab5c973deb2aa86c9b9ed31408f3a05115a
Signed-off-by: Dean Troyer <dtroyer@gmail.com>