Merge remote-tracking branch 'origin/NR_UE_timers_and_constants_functions' into integration_2023_w23

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

CI only: integration_2023_w23_ci

See merge request oai/openairinterface5g!2154

* !2139 Draft: chore(ci): porting the old IF4.5 LTE baremetal test to docker
* !2146 CI: Ensure termination of AmariUE in AW2S pipeline
* !2147 Build RHEL9 images on Openshift Cluster
* !1976 Mount all docker config files, remove sed-based templating of config files

More information: see https://access.redhat.com/discussions/5889431

- update of existing Dockerfiles for building RHEL8 images to RHEL9