[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/helm/starters/onap-app/requirements.yaml b/kubernetes/helm/starters/onap-app/requirements.yaml
index bdf33d5..4fecc22 100644
--- a/kubernetes/helm/starters/onap-app/requirements.yaml
+++ b/kubernetes/helm/starters/onap-app/requirements.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.
@@ -14,8 +15,8 @@
 
 dependencies:
   - name: common
-    version: ~8.x-0
+    version: ~9.x-0
     repository: '@local'
   - name: repositoryGenerator
-    version: ~8.x-0
+    version: ~9.x-0
     repository: '@local'