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-control-plane/values.yaml b/omec/omec-control-plane/values.yaml
index 2c83ee6..2567a38 100644
--- a/omec/omec-control-plane/values.yaml
+++ b/omec/omec-control-plane/values.yaml
@@ -115,5 +115,5 @@
   spgwc:
     # make it global
     spgwu:
-      addr: spgwu
+      addr: spgwu-dp-comm
       port: 20