Remove duplicated option for Cinder BDD backend
Remove duplicated option for Cinder BDD backend

Option volume_clear is now available from cinder::volume manifest
and we have duplication error.

Change-Id: I9c4840959ac0d680c382b713465554e0662e2401
Closes-bug: #1558072

stackforge/fuel-library,stackforge/fuel-library,xarses/fuel-library,stackforge/fuel-library,xarses/fuel-library,stackforge/fuel-library,xarses/fuel-library,xarses/fuel-library