[COMMON] Bump ONAP version

Use version 9.0.0 for Istanbul
Also update the doc.

Issue-ID: OOM-1
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
Change-Id: I03e11799bf487226784c98b04116f005c89d1e70
diff --git a/kubernetes/dcaegen2-services/components/dcae-heartbeat/Chart.yaml b/kubernetes/dcaegen2-services/components/dcae-heartbeat/Chart.yaml
index feb3d53..a350b93 100644
--- a/kubernetes/dcaegen2-services/components/dcae-heartbeat/Chart.yaml
+++ b/kubernetes/dcaegen2-services/components/dcae-heartbeat/Chart.yaml
@@ -1,6 +1,7 @@
 # ================================ LICENSE_START =============================
 # ============================================================================
 # Copyright (c) 2021 AT&T Intellectual Property
+# Modifications Copyright © 2021 Orange
 # ============================================================================
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -19,4 +20,4 @@
 appVersion: "Honolulu"
 description: DCAE Heartbeat Microservice
 name: dcae-heartbeat
-version: 8.0.0
\ No newline at end of file
+version: 9.0.0