AETHER-45 Add support of latest features in BESS based SPGWU

This patchset resolves the issues below.
Also enable PFCP by default.
- AETHER-370 Add support of UP4 pipeline
- AETHER-371 Add support of PFCP iface
- AETHER-373 Make upf.json fully configurable

Change-Id: I665168156968c090f3c297228b7b35f3dc0d8ace
diff --git a/omec/omec-user-plane/templates/configmap-spgwu.yaml b/omec/omec-user-plane/templates/configmap-spgwu.yaml
index 583f283..5829656 100644
--- a/omec/omec-user-plane/templates/configmap-spgwu.yaml
+++ b/omec/omec-user-plane/templates/configmap-spgwu.yaml
@@ -12,7 +12,8 @@
   labels:
 {{ tuple "spgwu" . | include "omec-user-plane.metadata_labels" | indent 4 }}
 data:
-  spgwu.json: |
-{{ tuple "config/_spgwu.json.tpl" . | include "omec-user-plane.template" | indent 4 }}
+{{- range $key, $value := .Values.config.spgwu.cfgFiles }}
+  {{ $key }}: {{ toJson $value | quote }}
+{{- end }}
   bessd-poststart.sh: |
 {{ tuple "bin/_bessd-poststart.sh.tpl" . | include "omec-user-plane.template" | indent 4 }}