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

- Make required adaptations in RLC and default DRB configuration

update of the 5G feature set (gNB and UE)
ref : Florian K ppt

eNB RRC version
eNB X2AP section

- no_data_in_dmrs was being used at gNB side, and not handled at UE side
- nr_schedule_response wasn't being called in ulsim

- scheduling is needed only when whe it doesn´t fall in dci_ind or rx_ind cases
- cleaned up some old commented out code

Conflicts:
	cmake_targets/CMakeLists.txt
	openair2/GNB_APP/gnb_app.c
	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c
	openair2/RRC/NR/rrc_gNB_nsa.c

Develop Integration 2020 week 23

The following merge requests have been included:

* MR 823 : NR-UE Init sync bugfix
* MR 824 : code cleanup

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

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

Conflicts:
	executables/nr-ue.c

Conflicts:
	executables/nr-ue.c
	openair1/PHY/NR_REFSIG/dmrs_nr.c
	openair1/PHY/NR_TRANSPORT/nr_prach.c
	openair1/PHY/NR_TRANSPORT/nr_transport_common_proto.h
	openair1/PHY/NR_TRANSPORT/nr_transport_proto_common.h
	openair1/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c
	openair1/PHY/NR_UE_TRANSPORT/nr_transport_ue.h
	openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_ue.c
	openair1/SCHED_NR_UE/fapi_nr_ue_l1.c
	openair1/SIMULATION/NR_PHY/prachsim.c
	openair1/SIMULATION/NR_PHY/ulsim.c
	openair2/LAYER2/NR_MAC_COMMON/nr_mac_extern.h
	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c
	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c

Develop Integration Branch : 2020 week 22

The following Merge Requests are been included:

* MR 796 : Nr rrc configuration trx thread
* MR 807 : Use SCF FAPI for DMRS and PTRS also on UE side
* MR 817 : Fixing errored/missing circular dependency protection
* MR 819 : cleanup branch and initial ninja build support
* MR 820 : CI: Add OAI-CN-In-Docker support

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

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

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

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

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

Merge remote-tracking branch 'origin/add_oai_cn_docker_support_to_ci' into develop_integration_2020_w22