2021-Q4 Milestone: * Periodic Registration Update * Support for Event Exposure (Registration State Report) * Implicit Deregistration Timer * Mobile Reachable Timer * Mobility Registration Update * NRF Selection (via NSSF) * Fix for validation of SMF Info * Fix RAN UE NGAP Id * Fix SMF Selection SD * Fix NSSAI mismatch * Fix Service Request * Fix HTTP2 * Fix MCC such as 001 * Docker optimization