Fix FakeISCSIDriver and FakeISERDriver
Fix FakeISCSIDriver and FakeISERDriver

Need to pass correct int value for provisioned_capacity_gb capability
to get it working with scheduler.

Change-Id: Iee93f11d12e035d89227c5ffaf336ee2dcd1bcec
Closes-Bug: #1453146

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