Update v1 deprecation warnings
Update v1 deprecation warnings

As discussed on IRC and mailing lists, we're going to give more time for
deprecation of the v1 API. Since we introduced the deprecation of the v1
API in Juno, we can remove it after EOL of Juno, which will be the
release of Liberty.

Change-Id: I2d6013717d84f98a20ed64b4ebf09bac6bb0843e

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