typos(?) in create_snapshots_in_db
typos(?) in create_snapshots_in_db

Other variables are used in line 783 (snap) and 784 (snapshot)
of cinder.volume.api.

Since it looks typo, I fix it.

Change-Id: I3f1aa3b71166e882c751362792fbf90477ecbd38
Closes-Bug: #1478236

Paul-Ezell/cinder-1,tlakshman26/cinder-https-changes,takeshineshiro/cinder,Paul-Ezell/cinder-1,potsmaster/cinder,nexusriot/cinder,openstack/cinder,nexusriot/cinder,tlakshman26/cinder-https-changes,potsmaster/cinder,sasukeh/cinder,dims/cinder,leilihh/cinder,mahak/cinder,nikesh-mahalka/cinder,JioCloud/cinder,mahak/cinder,eharney/cinder,Datera/cinder,petrutlucian94/cinder,j-griffith/cinder,winndows/cinder,scottdangelo/RemoveVolumeMangerLocks,tlakshman26/cinder-new-branch,duhzecca/cinder,Nexenta/cinder,manojhirway/ExistingImagesOnNFS,cloudbase/cinder,Datera/cinder,Hybrid-Cloud/cinder,scality/cinder,manojhirway/ExistingImagesOnNFS,phenoxim/cinder,takeshineshiro/cinder,NetApp/cinder,dims/cinder,apporc/cinder,sasukeh/cinder,JioCloud/cinder,scottdangelo/RemoveVolumeMangerLocks,ge0rgi/cinder,nikesh-mahalka/cinder,tlakshman26/cinder-bug-fix-volume-conversion-full,openstack/cinder,Hybrid-Cloud/cinder,bswartz/cinder,tlakshman26/cinder-bug-fix-volume-conversion-full,bswartz/cinder,cloudbase/cinder,j-griffith/cinder,scality/cinder,Nexenta/cinder,eharney/cinder,NetApp/cinder,CloudServer/cinder,leilihh/cinder,petrutlucian94/cinder,apporc/cinder,winndows/cinder,CloudServer/cinder,duhzecca/cinder,tlakshman26/cinder-new-branch,phenoxim/cinder