Changed name of detect_delta_file func, fixed rbd export command.
Changed name of detect_delta_file func, fixed rbd export command.

roman-verchikov/CloudFerry,miarmak/CloudFerry,realsystem/CloudFerry,SVilgelm/CloudFerry,japaniel/CloudFerry,japaniel/CloudFerry,MirantisWorkloadMobility/CloudFerry,archyufa/CloudFerry,realsystem/CloudFerry,andybondar/CloudFerry,MirantisWorkloadMobility/CloudFerry,realsystem/CloudFerry,japaniel/CloudFerry,MirantisWorkloadMobility/CloudFerry,mgrygoriev/CloudFerry,ntymtsiv/CloudFerry,SVilgelm/CloudFerry,toha10/CloudFerry,andybondar/CloudFerry,japaniel/CloudFerry,archyufa/CloudFerry,miarmak/CloudFerry,mgrygoriev/CloudFerry,mirrorcoder/CloudFerry,MirantisWorkloadMobility/CloudFerry,roman-verchikov/CloudFerry,ntymtsiv/CloudFerry,ntymtsiv/CloudFerry,SVilgelm/CloudFerry,mgrygoriev/CloudFerry,plomakin/CloudFerry,andybondar/CloudFerry,realsystem/CloudFerry,SVilgelm/CloudFerry,plomakin/CloudFerry,andybondar/CloudFerry,archyufa/CloudFerry,roman-verchikov/CloudFerry,archyufa/CloudFerry,Settis/CloudFerry,mirrorcoder/CloudFerry,mgrygoriev/CloudFerry,ntymtsiv/CloudFerry,roman-verchikov/CloudFerry