Tags

Pre-v2.2 release tag for testing

* Features
  - Adding debug info
* Fixes
  - Fix for Boost::signals2 issue
  - Fix exception handling
  - Fix HTTP/2 server shutdown
* Tech Debt
  - Stopping support for RHEL8/Rocky8 in favor of RHEL9/Rocky9
  - Removing unneccessary packages from target images
  - Move NRF SBI models to common src git submodule
  - HTTP client cpr library refactoring effort

* Features
  - Support YAML configuration file
    * Yaml validation default value
  - Added heartbeat parameter
* Fixes
  - Returning only REGISTERED NFs from Search result
  - Removing suspended NFs after timeout
* Tech debt
  - Updated common models to 3GPP TS 29.571 Release 16.13.0 and moved them to the shared common submodule
  - Switching to clang-format-12
  - Published image on Docker-Hub is using now Ubuntu-22 as base image
    * Ubuntu-18 is no longer supported

2021-Q4 Milestone:

* NF profile update
* Docker optimization

Fix build issue

Fix build issue

Added AUSF, UDR, UDM profile; Updated UPF profile; HTTP2

FQDN DNS resolution; Bug fixes; Full support for Ubuntu18 and RHEL8

Initial CI pipeline; Initial Ubuntu18 docker support