[Aether-1204] - Enhance the Dbuf helm chart

- Support two options for IP assigment
- Remove hardcoded service protocol and port

Change-Id: I899df50a01b4a48fccea396349c86cdb9d07c1f7
diff --git a/apps/dbuf/templates/service.yml b/apps/dbuf/templates/service.yml
index 8139fb9..48df27e 100644
--- a/apps/dbuf/templates/service.yml
+++ b/apps/dbuf/templates/service.yml
@@ -15,9 +15,8 @@
     {{- include "dbuf.selectorLabels" . | nindent 4 }}
   ports:
   - name: grpc
-    protocol: TCP
-    # TODO: define in values
-    port: 10000
+    protocol: {{ .Values.service.grpc.protocol }}
+    port: {{ .Values.service.grpc.port }}
     targetPort: grpc
 
 ---
@@ -31,8 +30,7 @@
   selector:
     {{- include "dbuf.selectorLabels" . | nindent 4 }}
   ports:
-  - name: stats
-    protocol: TCP
-    # TODO: define in values
-    port: 8080
-    targetPort: stats
+  - name: exporter
+    protocol: {{ .Values.service.stats.protocol }}
+    port: {{ .Values.service.stats.port }}
+    targetPort: exporter