CI: integration of the "test with equipment" script

  -- temporary into a separate jenkins job
  -- parameters are not in the pipeline script file
     they have to be set up manually in the Jenkins GUI configuration page
     they are then check if present in pipeline script
  -- call to python script
     -- build on a server with RF HW capabilities
        for the moment USRP B2x0
        also handles merge request process for gitlab
     -- since it is for CI, it is a clean build
     -- connect to an EPC (OAI or LTEBOX)
     -- terminates eNB / EPC
  -- log collection

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