CI: fix EPC IP address retrieve and zip of test-files

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>
9 jobs for develop in 0 seconds (queued for 13 minutes and 19 seconds)
Status Job ID Name Coverage
  External
passed Analysis with cppcheck

00:06:41

passed Build UE-ethernet

00:08:59

passed Build basic-sim

00:11:58

passed Build eNb-USRP

00:11:13

passed Build eNb-USRP-CentOS

00:06:12

passed Build eNb-ethernet

00:08:43

passed Build phy-sim

00:08:13

passed Test phy-sim

00:11:19

failed Test-FDD-Band7

00:34:12