Fix SA SIB1 segmentation fault

quickfix for realtime problem caused by memset

Add parameters: MCS, Bandwidth (in PRBs), slot scheduling bitmap

Conflicts:
	executables/nr-softmodem.h
	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c

MR !1114 : sanitize v1
-bugs or dirty code fixed 
-add first version of a rf board calibration tool, not finished

MR !1094 : sim channels
Channel simulation: 
-command mode: to change noise, path loss, model (AWGN, RICE, ...) parameters channel simulation 
-channels separation: each channel can have a different model (for HO test for example) 
-a new build option --sanitize to compile all OAI with gcc --sanitize=address

MR !1034 : new gtpu
-New GTPU implementation

MR !1101 : develop-SA-CBRA
-Implementation of Contention Based Random Access procedures for 5G-NR Initial Access in SA mode (including contributions from BUPT and Fujitsu)