[CORD-2909] Flatten and parameterize charts

Change-Id: I695c1df063b0f6f6ccf280254d54cc701292348f
diff --git a/xos-core/templates/coreapi-cert-secret.yaml b/xos-core/templates/coreapi-cert-secret.yaml
index 4296da5..048f552 100644
--- a/xos-core/templates/coreapi-cert-secret.yaml
+++ b/xos-core/templates/coreapi-cert-secret.yaml
@@ -1,3 +1,4 @@
+---
 # Copyright 2017-present Open Networking Foundation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");