Ambiguous exception expectation in SessionMoveVersionExceptionTest and WorkspaceMoveVersionExceptionTest

The exception expectation in testSessionMoveSourceCheckedInVersionException() is ambiguous.

Session.move() attempts to move a checked in node to a destination where a node already exists. For either case an exception is specified (VersionException and ItemExistsException), but the spec does not say which one takes precedence.

The test should therefore try to move the node to a location where no node exists.