add is_public and owner attrs to image details dict
add is_public and owner attrs to image details dict

for openstack compatibility purposes, image details response json needs
to include the 'is_public' and 'owner' attributes. without these atts
set some client side consumers break. this PR adds those attrs to the
image details dict.
softlayer/jumpgate,BillArnold/barnoldjg,softlayer/jumpgate,HOQTEC/MCP,myxemhoho/mutil-cloud-manage-paltform,myxemhoho/mutil-cloud-manage-paltform,HOQTEC/MCP,wpf710/app-proxy,BillArnold/barnoldjg,wpf710/app-proxy