VOL-3657 support stack id in rpc events by passing stack id through helm chart

Change-Id: Id45c5984540265eb40df77de979f732080908656
diff --git a/voltha/templates/core-deploy.yaml b/voltha/templates/core-deploy.yaml
index f10d8b9..ba729f5 100644
--- a/voltha/templates/core-deploy.yaml
+++ b/voltha/templates/core-deploy.yaml
@@ -101,6 +101,7 @@
             - "--trace_enabled={{ .Values.global.tracing.enabled }}"
             - "--trace_agent_address={{ tpl .Values.services.tracing_agent.address . }}"
             - "--log_correlation_enabled={{ .Values.global.log_correlation.enabled }}"
+            - "--stack_id={{ tpl .Values.rw_core.stack_id . }}"
           ports:
             - containerPort: 50057
               name: grpc