Tweak node selector in mcord-cdn-local chart

Change-Id: Ie89dd5c83ac1c2f565486205b3467aee6f9011bb
diff --git a/mcord/mcord-cdn-local/templates/nginx.yaml b/mcord/mcord-cdn-local/templates/nginx.yaml
index aed0f95..82de8b0 100644
--- a/mcord/mcord-cdn-local/templates/nginx.yaml
+++ b/mcord/mcord-cdn-local/templates/nginx.yaml
@@ -48,7 +48,7 @@
     spec:
       #hostNetwork: true
       nodeSelector:
-        kubernetes.io/hostname: "node2"
+        kubernetes.io/hostname: {{ .Values.cdn_node_selector }}
       terminationGracePeriodSeconds: 0
       imagePullSecrets:
       - name: nexus-docker-secret