Adding service to expose the DMI server port

Change-Id: If723340251e26c55325f90853d4f0b1d7f375d22
diff --git a/bbsim/templates/deployment.yaml b/bbsim/templates/deployment.yaml
index 772c62e..c8d8b00 100644
--- a/bbsim/templates/deployment.yaml
+++ b/bbsim/templates/deployment.yaml
@@ -94,6 +94,9 @@
             - name: "bbsim-{{ .Values.olt_id }}-rest"
               containerPort: {{ .Values.bbsim_rest_port }}
               protocol: TCP
+            - name: "bbsim-{{ .Values.olt_id }}-dmi"
+              containerPort: {{ .Values.bbsim_dmi_port }}
+              protocol: TCP
           env:
             - name: POD_IP
               valueFrom: