changes in gtpu interface for testing, small changes in L1 for PUSCH signal/noise measurements. SRB2 interfaces.

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

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

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

Include second RRC Reconfiguration message to carry DRB, SRB2 configuration and NAS PDU Session Establishment Accept message

-Remove DRB and SRB configuration from the first RRC Reconfiguration message. Missing radio configuration to be filled in first RRC Reconfiguration message.

CMAC_Init has to be called between each usage of the cmac context.

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

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

Conflicts:
	openair1/PHY/NR_TRANSPORT/pucch_rx.c
	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c

- use bearer-1 in compute_t of integrity NIA2
- compare integrity at the right place in nr_pdcp_entity_recv_pdu
- proper handling of security parameters settings (algos, keys)

Modify configuration of NGAP and NAS messages to comply with OAI CN configuration according to Fujitsu patch

-Hardcodings to be removed later when the NAS extensions will be integrated for OAI UE

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

This commit implements integrity and security settings for nr pdcp. It will
only work for SRBs.

This commit has not been tested. It may fail to work completely. To be checked.

changed DCI candidates to 4 for initialDownlinkBWP ue-specific searchSpace. ulsch/pusch stats added to nrL1stats.log

MR !1129 : gnb-realtime-hotfix
-Hotfix for realtime performance issue
-Enabled L1 and scheduler timing statistics
-Changed order of UL Indication. L1 Rx -> UL Ind -> L1 Tx

MR !1123 : [CI] ci_phytest
-new 5G NR phy test -q -U 787200 -T 106 -t 28 -D 130175 -m 28 -M 106

MR !1128 : [CI] ci_add_runtime_stats
-adding L1 processing stats

MR !1132 : [CI] ci_add_uldlharq_stats
-additonal ulsch/dlsch stat

no MR : hotfix branch fixgtpu 
-revert default values for 5GS
-fix T_IDs.h build

added n1L1_stats.log. improvements to noise level (PUCCH/PUSCH) and signal level (PUCCH) computations. added DTX detection parameters for PUCCH/PUSCH/PRACH in L1 section of configuration file. hotfix from C. Roux for SRB PDCP integrity. extra logging to debug missing PUSCH/DCI at UE.