+ REG_HTTP_PROXY_HOST: {get_param: rhel_reg_http_proxy_host}
+ REG_HTTP_PROXY_PORT: {get_param: rhel_reg_http_proxy_port}
+ REG_HTTP_PROXY_USERNAME: {get_param: rhel_reg_http_proxy_username}
+ REG_HTTP_PROXY_PASSWORD: {get_param: rhel_reg_http_proxy_password}