Change input command line from -g 2 A l to -g A,l and add channel correlation level as command line option in ulsim

Implementation of tables G.2.1.1-2, G.2.1.1-3 and G.2.1.1-4 of TS 38.104, for TDLA30, TDLB100 and TDLC300 channel models

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

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

fix(ci): when running the bare-metal pipelines, some files are already on the target side with root ownership. Copy is bypassed
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

  * Copying everything back to the python executor workspace
    * For iperf operations, client and server logs are always copied,
      even when successful
    * for xNB run logs, since we could delete completely xNB workspaces
      on the python executor, they are always there
  * Copying back to the xNB server #0 for artifacting
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>

fix(ci): since we removed images from builder server, we need to pull them back before pushing to Docker-Hub
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>