CI: deploy Magme-MME OAI EPC through CoreNetwork, use in Ping/Iperf

- call scripts for magma MME-based deployment of OAI 5GC in
  ci_infra.yaml
- implement the existing python code through scripts (which does the same)
- save the cql file in the repo, which was previously downloaded every
  time
- use for porcepix-cn4g and nano-cn4g (un)deployment, ping, perf, in XML
  files

ci-scripts/scripts/magma-epc-logcollect.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+function die() { echo "${@}"; exit 1; }
+
+[ $# -eq 1 ] || die "usage: $0 <logdir>"
+
+DIR=${1}
+
+docker logs prod-oai-hss &> ${DIR}/oai-hss.log
+docker logs prod-magma-mme &> ${DIR}/magme-mme.log
+docker logs prod-oai-spgwc &> ${DIR}/oai-spgwc.log
+docker logs prod-oai-spgwu-tiny &> ${DIR}/oai-spgwu.log