Capacity weigher: Pass correct arg to super()
Capacity weigher: Pass correct arg to super()

The wrong class is being used as the first
argument to super().

Change-Id: Ie748100f4a12b502f5f89afe45fc76312c1f6545

Hybrid-Cloud/cinder,ge0rgi/cinder,phenoxim/cinder,mahak/cinder,j-griffith/cinder,mahak/cinder,Hybrid-Cloud/cinder,Datera/cinder,eharney/cinder,phenoxim/cinder,openstack/cinder,eharney/cinder,NetApp/cinder,openstack/cinder,bswartz/cinder,Datera/cinder,NetApp/cinder,bswartz/cinder,Nexenta/cinder,j-griffith/cinder,Nexenta/cinder,cloudbase/cinder,cloudbase/cinder