removed some debugging assertions in DU, added sending and handling of GNB-CU-Configuration-Update-Acknowledge. Note: Still need to do GNB-CU-Configuration-Update-Failure.

Merge branch 'NR_SA_F1AP_5GRECORDS' of https://gitlab.eurecom.fr/oai/openairinterface5g into NR_SA_F1AP_5GRECORDS

removed assertions on non-presense of extensions for Cells_to_be_Activated_List_Item in both F1-Setup-Response and GNB-CU-Confiruation-Update

Merge branch 'NR_SA_F1AP_5GRECORDS' of https://gitlab.eurecom.fr/oai/openairinterface5g into NR_SA_F1AP_5GRECORDS

# Conflicts:
#	openair2/LAYER2/nr_pdcp/nr_pdcp_entity_drb_am.c
#	openair2/LAYER2/nr_pdcp/nr_pdcp_oai_api.c

Conflicts:
	cmake_targets/CMakeLists.txt
	executables/nr-softmodem.c
	executables/nr-uesoftmodem.c
	openair1/PHY/NR_TRANSPORT/nr_dlsch_coding.c
	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c
	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c
	openair2/LAYER2/nr_pdcp/nr_pdcp_entity.c
	openair2/LAYER2/nr_pdcp/nr_pdcp_entity_drb_am.c
	openair2/LAYER2/nr_pdcp/nr_pdcp_oai_api.c
	openair2/LAYER2/nr_rlc/nr_rlc_oai_api.c

-Remove redundant calls to mac_rlc_data_ind for DTCH case

MR1029 : Benetel driver update  
This MR fixes an issue with the driver for the 4G Benetel RRUs.
Power levels on the 5G side were adapted to avoid saturation of the signals. 
5G performance is now the same as with USRP. 
Support for 2 antennas for both 4G and 5G was added

MR1062 : fixing the RE offset for each Rx antenna in pusch channel estimation

- SRB addition is now done through add_srb, add_srb_am functions

-For the moment SRBs are preconfigured (as was done for DRBs in noS1 mode)
but this should be removed

added TDD configuration information to F1-Setup-Request based on the configuration file contents.. Corrected some bugs in F1AP encoding for TDD.

Conflicts:
	cmake_targets/CMakeLists.txt
	executables/nr-softmodem.c
	executables/nr-uesoftmodem.c
	openair1/PHY/NR_TRANSPORT/nr_dlsch_coding.c
	openair2/LAYER2/NR_MAC_UE/nr_ra_procedures.c
	openair2/LAYER2/NR_MAC_UE/nr_ue_dci_configuration.c
	openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c
	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c
	openair2/LAYER2/nr_pdcp/nr_pdcp_entity.c
	openair2/LAYER2/nr_pdcp/nr_pdcp_entity_drb_am.c
	openair2/RRC/NR/rrc_gNB.c
	openair2/RRC/NR/rrc_gNB_NGAP.c
	openair2/RRC/NR_UE/rrc_UE.c
	openair3/NGAP/ngap_gNB.c
	openair3/NGAP/ngap_gNB_nas_procedures.c

MR1046 : Add support for NR UL SC-FDMA up to 100 MHz

MR1053Nr : pdcp nea2 security

MR1049 : improve rfsim
-Fix a regression 
Earlier parameter reading was moved to an external thread,  
Eventually the check at the end of the main was too early, 
Declaration of  some extra parameters are now on command line
-Enhancement: 
use the rfsim as a server on UE side, so we can connect two xNB to one UE
-Simplification: 
remove rfsim flags that have been made for convergence with replay function in usrp driver, but this is useless as they changed their code
-Fix a bug in ubuntu 20.04 (now the code is ready in whole OAI)


MR1056 : Bugfix: NR BSR calculation
Fixes a bug in the scheduler for BSR calculation. 
Before, we might wrongly track the BSR of a UE and not schedule it anymore although it has data. 
Should be fixed now and improve UL throughput. 

MR963 : Nr mac multi rach global edge
-Handling of Multiple Users triggering RACH request in different RACH Occasions in same slot
-Providing Random Access Response according to RACH request

fixing the RE offset for each Rx antenna in pusch channel estimation

MR978 : 
We have incorporated 5G NR nFAPI into the develop branch
P5 and P7 interfaces for NR have been implemented. 
With this MR, downlink transmission through nFAPI will be possible. 
We have also made sure that 4G nFAPI can be used from within the develop branch.