Actually encode the SolidFire json dump result
Actually encode the SolidFire json dump result

The SolidFire driver intends to do a encode on the json data to utf-8,
unfortunatly it's not really doing anything because the syntax of the
calls is wrong.

This patch changes things to actually perform the encoding.

Change-Id: I2bc94ed1fdc1dd5f9a6371ae5f63a955f213bc15
Closes-Bug: #1355622

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