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/xml_files/container_lte_n3xx_tdd_2x2_tm2.xml

@@ -95,6 +95,7 @@
     <class>Ping</class>
     <desc>Ping: 20 pings</desc>
     <id>up2</id>
+    <svr_id>porcepix-cn4g</svr_id>
     <ping_args>-c 20 %cn_ip%</ping_args>
     <ping_packetloss_threshold>1</ping_packetloss_threshold>
     <ping_rttavg_threshold>60</ping_rttavg_threshold>
@@ -104,6 +105,7 @@
     <class>Ping</class>
     <desc>Ping: 100 pings, size 1024</desc>
     <id>up2</id>
+    <svr_id>porcepix-cn4g</svr_id>
     <ping_args>-c 100 -s 1024 -i 0.2 %cn_ip%</ping_args>
     <ping_packetloss_threshold>1</ping_packetloss_threshold>
     <ping_rttavg_threshold>60</ping_rttavg_threshold>