AETHER-1805 Add support of VLAN in UPF interfaces

Change-Id: I351323fed8a8476e1112674f78cdc273481aee75
diff --git a/omec/omec-user-plane/templates/networks.yaml b/omec/omec-user-plane/templates/networks.yaml
index 528ee99..a448a20 100644
--- a/omec/omec-user-plane/templates/networks.yaml
+++ b/omec/omec-user-plane/templates/networks.yaml
@@ -16,6 +16,9 @@
 spec:
   config: '{
     "cniVersion": "0.3.1",
+  {{- if hasKey .Values.config.upf.access "vlan" }}
+    "vlan": {{ .Values.config.upf.access.vlan }},
+  {{- end }}
     "type": {{ .Values.config.upf.cniPlugin | quote }},
     "ipam": {
         "type": {{ .Values.config.upf.ipam | quote }}
@@ -34,6 +37,9 @@
 spec:
   config: '{
     "cniVersion": "0.3.1",
+  {{- if hasKey .Values.config.upf.core "vlan" }}
+    "vlan": {{ .Values.config.upf.core.vlan }},
+  {{- end }}
     "type": {{ .Values.config.upf.cniPlugin | quote }},
     "ipam": {
         "type": {{ .Values.config.upf.ipam | quote }}