Add 4G only mode deployment rather than keeping separate branch

smf/smf_4g.yaml

@@ -0,0 +1,48 @@
+logger:
+    file: /open5gs/install/var/log/open5gs/smf.log
+
+sbi:
+    server:
+      no_tls: true
+    client:
+      no_tls: true
+
+parameter:
+    no_ipv4v6_local_addr_in_packet_filter: true
+
+smf:
+    freeDiameter: /open5gs/install/etc/freeDiameter/smf.conf
+    gtpc:
+      - addr: SMF_IP
+    gtpu:
+      - addr: SMF_IP
+    pfcp:
+      - addr: SMF_IP
+    subnet:
+      - addr: UE_IPV4_INTERNET_TUN_IP
+        dnn: internet
+        dev: ogstun
+      - addr: 2001:230:cafe::1/48
+        dev: ogstun
+        dnn: internet
+      - addr: UE_IPV4_IMS_TUN_IP
+        dnn: ims
+        dev: ogstun2
+      - addr: 2001:230:babe::1/48
+        dnn: ims
+        dev: ogstun2
+    dns:
+      - 8.8.8.8
+      - 8.8.4.4
+      - 2001:4860:4860::8888
+      - 2001:4860:4860::8844
+    p-cscf:
+      - PCSCF_IP
+    mtu: 1400
+    metrics:
+      - addr: SMF_IP
+        port: 9091
+
+upf:
+    pfcp:
+      - addr: UPF_IP

smf/smf_init.sh

@@ -37,6 +37,10 @@ UE_IPV4_INTERNET_TUN_IP=$(python3 /mnt/smf/ip_utils.py --ip_range $UE_IPV4_INTER
 UE_IPV4_IMS_TUN_IP=$(python3 /mnt/smf/ip_utils.py --ip_range $UE_IPV4_IMS)
 
 cp /mnt/smf/smf.yaml install/etc/open5gs
+if [[ ${DEPLOY_MODE} == 4G ]];
+then
+    cp /mnt/smf/smf_4g.yaml install/etc/open5gs/smf.yaml
+fi
 cp /mnt/smf/smf.conf install/etc/freeDiameter
 cp /mnt/smf/make_certs.sh install/etc/freeDiameter
 
@@ -53,6 +57,8 @@ sed -i 's|EPC_DOMAIN|'$EPC_DOMAIN'|g' install/etc/freeDiameter/smf.conf
 sed -i 's|LD_LIBRARY_PATH|'$LD_LIBRARY_PATH'|g' install/etc/freeDiameter/smf.conf
 sed -i 's|EPC_DOMAIN|'$EPC_DOMAIN'|g' install/etc/freeDiameter/make_certs.sh
 
+
+
 # Generate TLS certificates
 ./install/etc/freeDiameter/make_certs.sh install/etc/freeDiameter