[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/common/repositoryGenerator/Chart.yaml b/kubernetes/common/repositoryGenerator/Chart.yaml
index fc10b1b..24d9f59 100644
--- a/kubernetes/common/repositoryGenerator/Chart.yaml
+++ b/kubernetes/common/repositoryGenerator/Chart.yaml
@@ -1,4 +1,5 @@
 # Copyright © 2017 Amdocs, Bell Canada
+# 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.
@@ -15,4 +16,4 @@
 apiVersion: v1
 description: Template used to generate the right repository link
 name: repositoryGenerator
-version: 8.0.0
+version: 9.0.0