NXDRIVE-438: Update set proxy to return string
NXDRIVE-438: Update set proxy to return string

rsoumyassdi/nuxeo-drive,arameshkumar/nuxeo-drive,ssdi-drive/nuxeo-drive,arameshkumar/nuxeo-drive,ssdi-drive/nuxeo-drive,arameshkumar/base-nuxeo-drive,arameshkumar/base-nuxeo-drive,ssdi-drive/nuxeo-drive,arameshkumar/nuxeo-drive,arameshkumar/base-nuxeo-drive,arameshkumar/nuxeo-drive,arameshkumar/base-nuxeo-drive,rsoumyassdi/nuxeo-drive,rsoumyassdi/nuxeo-drive,rsoumyassdi/nuxeo-drive