[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/portal/components/portal-mariadb/Chart.yaml b/kubernetes/portal/components/portal-mariadb/Chart.yaml
index 5883b99..a15f9e7 100644
--- a/kubernetes/portal/components/portal-mariadb/Chart.yaml
+++ b/kubernetes/portal/components/portal-mariadb/Chart.yaml
@@ -1,5 +1,6 @@
 # Copyright © 2017 Amdocs, Bell Canada
 # Modifications Copyright © 2018 AT&T
+# 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.
@@ -16,4 +17,4 @@
 apiVersion: v1
 description: MariaDB Service
 name: portal-mariadb
-version: 8.0.0
+version: 9.0.0