VOL-3074: Enable node affinity for openolt adapter image on demo-pod

Change-Id: Ieab275b517f7b6fac8fb06d827a987375d274875
diff --git a/kubernetes-configs/voltha/onf-demo-pod.yml b/kubernetes-configs/voltha/onf-demo-pod.yml
index 41ea22e..b51e753 100644
--- a/kubernetes-configs/voltha/onf-demo-pod.yml
+++ b/kubernetes-configs/voltha/onf-demo-pod.yml
@@ -38,6 +38,11 @@
   backupOperator: false
   restoreOperator: false
 
+nodeAffinityConfig:
+  enabled: true
+  node_label_key: "in-band"
+  node_label_value: "yes"
+
 voltha-etcd-cluster:
   clusterSize: 1
 onos_env: