added optional filed up_interface from upfinfo
"upfInfo": {
"interfaceUpfInfoList": [{
"endpointFqdn": "oai.access.org",
"interfaceType": "N3",
"ipv4EndpointAddresses": ["192.168.72.134"],
"networkInstance": "oai.access.org"
}, {
"endpointFqdn": "oai.core.org",
"interfaceType": "N6",
"ipv4EndpointAddresses": ["192.168.73.134"],
"networkInstance": "oai.core.org"
}],