5G IP Traffic for SA mode

See merge request aburger/openairinterface5g!85

The filtering added in the nrue_procedures.c file
are already happening in the stub function so we
should be duplicating them in the NRUE MAC layer.

In this commit, we changed the UCI handling.
When the UL_TTI_REQ arrives at the NRUE it
has info related to how many UCIs we should
pull from the queue and send to the gNB. If
we do not have that many UCIs available (likely
becasue a DL_TTI_REQ is late), then we will
requeue the UL_TTI_REQ and wait until we have
all the UCI indications before multiplexing.
This change makes it easier to handle multiple
UCIs becasue previously we would send what we
had and then try again later which made keeping
track of the UL_TTI_REQ and second UCI more
difficult.

1. Added rnti filter for multiple UEs.
2. Adjusted mode offset for SA mode.

Also, we had two heap-buffer-overflow crashes while
filling the CRC_IND and RX_IND. The corrected CALLOC
command is included in this commit as well.

Lastly, we included a better fix for handling late
DL_TTI_REQs. If the number of active harqs is larger
than the number of UCIs we have built, this is a good
indicator that the DL_TTI_REQ is late. To mitigate
problems, we will requeue the UL_TTI_REQ to when the
late DL_TTI_REQ comes in, we can handle the late
UCI that is built from it.

The nr_rrc_ue_process_RadioBearerConfig() function
call in the RRC layer of the NRUE was removed when
it should not have been for NSA mode. This is now
added back in for NSA mode. Also, the call to
pdcp_run should only be when were NOT in NOS1 mode
and ARE in SA mode. This was fixed as well.

Ue-to-Ue IP traffic in NSA works, but eventually
the NSA UE will crash due to an incorrect PDCCH
configuration. This is a bug we will need to look
into. It doesnt always crash, only about 40% of
the time. And even when the NRUE does crash, it
happens towards the end of the simulation.

This commit includes a hack fix that has allowed
the Ip traffic to work in SA mode. Furthermore,
NSA mode (without the EPC) works in this commit
as well with up to 4 NSA UEs. We will need to
understand better the issue with the UL_DCI
handling in the NRUE that was causing the gNB
to crash.

The AssertFatal in the gNB when the gNB runs out
of downlink HARQ PIDs is caused by the NRUE
receiving a UL_DCI and then building BOTH a UCI
and a CRC/RX pair. So we are essentially sending
a UL and DL DCI to the gNB in this case which
results in an unexpected HARQ PID being received
in the gNB. The filtering in this commit stops
the UCI being built in the NRUE when a UL_DCI
is recevied.

Integrated ra procedure for both nsa and sa.

See merge request aburger/openairinterface5g!83

The IP traffic of a single NRUE works most
of the time in this commit. There seems to
be a bug in the gNB and it will occassionally
crash with a heap-buffer-overflow. This will
be looked at in the next commit.

The changes in this commit include gathering
all of the UCI indications in the queue that
have the same scheduled sfn_slot and sending
them as one aggregated UCI when the scheduled
sfn_slot matches the received ul_tti_request.

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

It's used only if LOG_M is enabled.

MR !1307: WIP: [CI] real time stats and monitoring update
-MR !1280 (closed) : MAC statistics in separate thread
-log X1AP-PDU messages for eNB
-update real time stats collection (from stats logs file instead of stdout)
-update runtime monitoring (conf file, pages)

MR !1301: Fix for blocked process in FR2

MR !1312: CI: adding NSA-B200 sanity check pipeline to automatic regression test-suite
-Validate that all required routes are present 
-Copy the image from a "build" server to a "test" server 
-fixes for the log collection on the CoreNetwork components

MR !1282 : Add MCS from HARQ BLER
-Estimates correct MCS using EMA, kept between target thresholds dl_bler_target_upper and dl_bler_target_lower (conf options) for 1st retx and below dl_rd2_bler_threshold for 2nd retx 
-Maximum MCS configurable 
-on 3rd retx, reduce MCS by 5

Other commits in the integration branch:
-push DL traffic to 60Mb
-solve long ping time in SA

When IP traffic is started on the NRUE, the
gNB immediately crashes