1. Adding a "SL" frequency for Sidelink mode. The
   importance of this variable is to ensure that
   when we are in mode 1 (UE+UE+gNB), that the slot
   configuration and frequencies do not overlap. This
   SL frequency is important for rotation and allows
   us to utilize the OFDM modulation and demodulation
   functions that already exist in OAI.
2. Adding sl_mode to the command line for proper UE
   deployment when in SL mode. sl_mode can be set to 0,
   1, or 2. sl_mode 0 indicates no-Sidelink at all,
   mode 1 is gNB, UE, and UE (3GPP defines mode numbers).
   sl_mode 2 indicated UE to UE communications with no
   gNB at all.
3. New functions for calculating the carrier frequency
   for SL mode.

integration_2023_w23

See merge request oai/openairinterface5g!2156

* !2115 Enable 100MHz on USRP X310
* !2118 Cleanup code in PSS/SSS procedures
* !2123 improving NR UE RRC handling of timers and constants
* !2150 Fix type0_pdcch_ss_mux_pattern for FR2
* !2153 Fix UE DURATION_RX_TO_TX assertions
* !2155 chore(ci): saw a little missing version on HTML report
* !2117 remove some dead code

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