ENH: Add test for CloneVolume in vtkSlicerVolumesLogicTest1

This new test checks :
(1) That a cloned volume has no storage node
(2) That a cloned volume has display nodes not referencing
the original volume (fixed in commit 2525fc2 by copying only
the first display node and removing the others)
(3) That a cloned volume has the same imageData than the
original volume.

Also updates the other tests to use the testing macros
introduced in commit d58ba3b.

From: Alexis Girault <alexis.girault@kitware.com>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@24890 3bd1e089-480b-0410-8dfb-8563597acbee