Convert [Cinder]VolumeAttachment to new Schema format
Convert [Cinder]VolumeAttachment to new Schema format

blueprint property-schema-conversion

Change-Id: I93eeab88683d380c6dfe3433918792e328e71dd2

gonzolino/heat,miguelgrinberg/heat,pshchelo/heat,pshchelo/heat,cwolferh/heat-scratch,rdo-management/heat,miguelgrinberg/heat,steveb/heat,pratikmallya/heat,dragorosson/heat,gonzolino/heat,maestro-hybrid-cloud/heat,NeCTAR-RC/heat,maestro-hybrid-cloud/heat,ntt-sic/heat,dragorosson/heat,rdo-management/heat,noironetworks/heat,ntt-sic/heat,redhat-openstack/heat,dims/heat,takeshineshiro/heat,cryptickp/heat,rh-s/heat,redhat-openstack/heat,cryptickp/heat,srznew/heat,openstack/heat,pratikmallya/heat,noironetworks/heat,steveb/heat,jasondunsmore/heat,jasondunsmore/heat,cwolferh/heat-scratch,openstack/heat,takeshineshiro/heat,srznew/heat,NeCTAR-RC/heat,rh-s/heat,dims/heat