We can build Rel15 for LTE now

Done for do_RLC_BEARER, do_MAC_CELLGROUP, do_PHYSICALCELLGROUP function like do_MIB_NR and do_SERVINGCELLCONFIGCOMMON

First build command : ./build_oai --gNB -w USRP -I

 -- balanced (current version): all UE shares the same BW
 -- single-ue : one UE will use the whole requested BW
 -- unbalanced : all but one UE will use a residual 2% of the requested BW
                 the rest of requested BW will be used by one UE
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>

Procedures based on 38.213 ch.13 and ch.10, 38.211 ch.7.
 - Type0-PDCCH search space
 - Type0-PDCCH coreset

 * adding merge request allow flag:
  -- if false no forced merge to develop
  -- if true and if branch is not develop, then forced merge to develop
 * lowered the ru gains in CI conf files
 * adding on-the-fly HTML summary within python main.py script
 * adding 20 MHz testcases to FDD band 7 scenario
 * adding GitLab status for
  -- centOS build
  -- FDD-band7 tests
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>

But NR-RRC-Definitions.asn file only include the NR-RRC-Definitions DEFINITIONS section
If we include the NR-UE-Variables into asn file, it will can't be compile in asn tool
and also some of implict problem for new version asn file

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

 -- if false no forced merge to develop
 -- if true and if branch is not develop, then forced merge to develop
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

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

  -- Adding script to notify developer when introducing compilation warnings
  -- Fix on the CentOS log archiving / reporting
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

- install package 'vim-common' to have 'xxd' needed by the compilation
  process of the T tracer
- change the way xxd is called so that no file is created in case
  of error

  Adding a build stage on CentOS (only one variant : -w USRP --eNB)
  Should not trigger a fail for the moment
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

  -- log collection on enb log requires a sudo when removing log files
  -- added iperf log collection to jenkins file
  -- corrected iperf detection of packet loss ( added jitter also)
  -- increased iperf DL requested BW for 10 MHz
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

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

  -- stdbuf -o0 seems to be causing segmentation fault
  -- using daemon instead of nohup
  -- also repeating several time "got sync" message and flushing stdout/stderr
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

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

    added slave job trigger for testing
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

CI: integrating COTS-UE bench scripts

See merge request oai/openairinterface5g!350