Fix SnapshotInterval field
Fix SnapshotInterval field

phoenix-io/openstorage,libopenstorage/openstorage,pault84/openstorage,pault84/openstorage,kunalkushwaha/openstorage,ModelRocket/openstorage,ModelRocket/openstorage,portworx/openstorage,libopenstorage/openstorage,pault84/openstorage,libopenstorage/openstorage,jvinod/ost