CI: Improvements

 * 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>
9 jobs for develop in 0 seconds (queued for 11 minutes and 30 seconds)
Status Job ID Name Coverage
  External
passed Analysis with cppcheck

00:06:12

passed Build UE-ethernet

00:09:30

passed Build basic-sim

00:12:01

passed Build eNb-USRP

00:10:30

passed Build eNb-USRP-CentOS

00:05:42

passed Build eNb-ethernet

00:08:59

passed Build phy-sim

00:08:30

passed Test phy-sim

00:11:17

passed Test-FDD-Band7

00:21:29