Merge remote-tracking branch 'origin/NR_FR2_RA' into integration_2021_wk02

openair1/PHY/INIT/nr_init.c

openair1/PHY/INIT/nr_init_ue.c

openair1/PHY/NR_REFSIG/nr_gold_ue.c

openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c

openair1/PHY/defs_nr_UE.h

openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c

openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.h

openair2/LAYER2/NR_MAC_UE/config_ue.c

openair2/LAYER2/NR_MAC_UE/mac_defs.h

openair2/LAYER2/NR_MAC_UE/main_ue_nr.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_UE/rar_tools_nrUE.c

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c

openair2/LAYER2/NR_MAC_gNB/mac_proto.h

.../GENERIC-LTE-EPC/CONF/gnb.band257.tm1.32PRB.usrpx300.conf