Add 'Negative' to negative test class names

This commit adds 'Negative' to negative test class names. Most of the
negative test classes have 'Negative' in their class name. And the
explicit name should be better in general. And this commit also changes
'VolumesCloneTest' to 'VolumesV2CloneNegativeTest'(adding 'V2').
Because the test is for the V2 api.

Change-Id: I3a24d89405b83567a7314c66795acf9e2c1752f1
2 files changed