Fix signature of _create_volume() in ThinLVMVolumeDriver

create_volume_from_snapshot will call _create_volume() with the
wrong parameters when using ThinLVMVolumeDriver.  It should be
compatible with LVMVolumeDriver's _create_volume() method.

Fixes bug: 1210853

Change-Id: I18f7baf60601b3bcf01425b505a0579a826f072e
Merge "Fix signature of _create_volume() in ThinLVMVolumeDriver"