COMAC-168,COMAC-171 [omec-dp] Change sriov configs and enable nodePort

- Change sriov configs to help user configure more easily
- Enable nodePort for CP-DP communication when CP and DP are deployed in
  separate clusters, diabled by default

Change-Id: I0e2520d66f2240a2888673d930487dcf112861a0
diff --git a/omec/omec-data-plane/templates/service-spgwu.yaml b/omec/omec-data-plane/templates/service-spgwu.yaml
index dd4766e..22c212b 100644
--- a/omec/omec-data-plane/templates/service-spgwu.yaml
+++ b/omec/omec-data-plane/templates/service-spgwu.yaml
@@ -19,12 +19,19 @@
 apiVersion: v1
 kind: Service
 metadata:
-  name: spgwu
+  name: spgwu-dp-comm
+  labels:
+{{ tuple "spgwu" . | include "omec-data-plane.metadata_labels" | indent 4 }}
 spec:
   selector:
 {{ tuple "spgwu" . | include "omec-data-plane.metadata_labels" | indent 4 }}
-  clusterIP: None
+{{- if .Values.config.spgwu.dpComm.nodePort.enabled }}
+  type: NodePort
+{{- end }}
   ports:
-  - name: cpdp
+  - name: dp-comm
     port: 20
     protocol: UDP
+  {{- if .Values.config.spgwu.dpComm.nodePort.enabled }}
+    nodePort: {{ .Values.config.spgwu.dpComm.nodePort.port }}
+  {{- end }}