A second thread message is created for L1 tx processing and pushed into the threaPool.
The message contain the nfapi rel15 PDUs for SSB, PDCCH and PDSCH. The memory of these PDUs are reused for subsequent slots.
Need to fix the nfapi mode VNF PNF implementation to adapt to this memory scheme.

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

MR !1206 : nr_ue_remove_high_speed_flag
This flag is always set to 1, 
With multiple DMRS symbols configuration, very recent DMRS containing symbol shall be for channel estimation.

MR !1205 : fix-lte-ue-modem-in-docker-container
We bind the socket to any_addr (instead of localhost), so the commands to the UE can come also from a remote machine

MR !1178 : NR_CSIRS_tomerge
Implementation of CSI RS transmission at gNB

MR !1211 : develop-NSA_SA_fixes
Small fixes for NSA and SA

Merge remote-tracking branch 'origin/fix-lte-ue-modem-in-docker-container' into integration_2021_wk30

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

MR !1193 : Update for 5G SA implementation

[CI] for gNB Phy test : update of the execution timings ref values, according to the latest developments

# Conflicts:
#	openair1/PHY/INIT/nr_init_ru.c

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

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

MR !1197 : dongzhanyi-zte-develop1
function nr_generate_dci_top and nr_generate_dci has the frame_parms parameter, whose type is the structure NR_DL_FRAME_PARMS.
The better way is to pass the parameter as a pointer. 

MR !1176 : NR_phytest_bugfixes
This fixes a bug for configurations with less than 50 PRBs in phy-test mode.

MR !1142 : nr-dl-mimo-2layer

This reverts commit af0d7dab

- This flag is always set to 1, furthermore with multiple DMRS symbols
  configuration very recent DMRS containing symbol shall be for channel
  estimation.

-fixes UL iperf log collection/analysis for UE module
-fixes iperf processes mgt for UE module