Add return of updated object on update from DB
Add return of updated object on update from DB

There are a number of update methods in db/sqla/api
that update objects but no longer return the updated
reference for said object.

This patch adds the missing returns which are already
expected in the calling cidner/db/api wrapper. At some
point a close look at usage in callers
(ie cinder/volume/manager) should be done to make sure
we're being efficient here and not doing another get after
every update.

Change-Id: I0464d1879571a0044a416d652a186b1462c57fa2
Closes-Bug: #1349912

bswartz/cinder,CloudServer/cinder,hguemar/cinder,phenoxim/cinder,nikesh-mahalka/cinder,github-borat/cinder,eharney/cinder,dims/cinder,openstack/cinder,rakeshmi/cinder,mahak/cinder,hguemar/cinder,alex8866/cinder,manojhirway/ExistingImagesOnNFS,nexusriot/cinder,redhat-openstack/cinder,NetApp/cinder,tlakshman26/cinder-https-changes,duhzecca/cinder,CloudServer/cinder,scottdangelo/RemoveVolumeMangerLocks,nexusriot/cinder,Nexenta/cinder,manojhirway/ExistingImagesOnNFS,takeshineshiro/cinder,tlakshman26/cinder-https-changes,winndows/cinder,tlakshman26/cinder-new-branch,apporc/cinder,j-griffith/cinder,cloudbase/cinder,saeki-masaki/cinder,petrutlucian94/cinder,j-griffith/cinder,julianwang/cinder,petrutlucian94/cinder,phenoxim/cinder,JioCloud/cinder,Datera/cinder,tlakshman26/cinder-bug-fix-volume-conversion-full,rakeshmi/cinder,github-borat/cinder,Akrog/cinder,ge0rgi/cinder,mahak/cinder,apporc/cinder,leilihh/cinder,nikesh-mahalka/cinder,cloudbase/cinder,dims/cinder,sasukeh/cinder,scality/cinder,scottdangelo/RemoveVolumeMangerLocks,eharney/cinder,bswartz/cinder,Nexenta/cinder,tlakshman26/cinder-bug-fix-volume-conversion-full,saeki-masaki/cinder,duhzecca/cinder,JioCloud/cinder,potsmaster/cinder,winndows/cinder,abusse/cinder,Accelerite/cinder,sasukeh/cinder,tlakshman26/cinder-new-branch,takeshineshiro/cinder,Hybrid-Cloud/cinder,Paul-Ezell/cinder-1,potsmaster/cinder,NetApp/cinder,redhat-openstack/cinder,scality/cinder,leilihh/cinder,openstack/cinder,blueboxgroup/cinder,julianwang/cinder,abusse/cinder,Hybrid-Cloud/cinder,Paul-Ezell/cinder-1,Datera/cinder,Akrog/cinder,blueboxgroup/cinder,alex8866/cinder,Accelerite/cinder