CI: Add configuration files for 8x8 test with Benetel RUs

UP3 development UE is used since no dedicated CI UE is available for outdoor
testing. CN with PLMN 20899 can be deployed locally on demand, however for
now always-on CN is used (AMF IP address 172.21.6.5).

The gNB is currently configured with pdsch_AntennaPorts_N1 = 2 instead
of 4, as the proper 8x8 antenna configuration triggers an assertion in
polar procedures (see issue 1067). This will be corrected once the assertion
is resolved.

Signed-off-by: Jaroslava Fiedlerova <jaroslava.fiedlerova@openairinterface.org>

ci-scripts/ci_infra.yaml

@@ -44,6 +44,14 @@ up2-aerial:
   IF: wwan0
   MTU: 1500
 
+up3:
+  Host: up3
+  AttachScript: /opt/mbim/start_quectel_mbim.sh
+  DetachScript: /opt/mbim/stop_quectel_mbim.sh
+  NetworkScript: ip a show dev wwan0
+  IF: wwan0
+  MTU: 1500
+
 adb_ue_1:
   Host: nano
   InitScript: /home/oaicicd/ci_ctl_adb.sh initialize R3CM40LZPHT
@@ -125,6 +133,11 @@ oc-cn5g-20897-stonechat:
   Undeploy: "! scripts/oc-cn5g-undeploy.sh /opt/oai-cn5g-fed-develop-2025-jan oaicicd-core-for-fhi72"
   LogCollect: "! scripts/oc-cn5g-logcollect.sh /opt/oai-cn5g-fed-develop-2025-jan oaicicd-core-for-fhi72  %%log_dir%%"
 
+oc-cn5g-20899-always-on:
+  Host: stonechat
+  NetworkScript: echo "inet 172.21.6.12"
+  RunIperf3Server: False
+
 matix-cn5g:
   Host: matix
   NetworkScript: docker exec prod-trf-gen ip a show dev eth0