[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/postgres-init/Chart.yaml b/kubernetes/common/postgres-init/Chart.yaml
index 7de0d9a..7cf3861 100644
--- a/kubernetes/common/postgres-init/Chart.yaml
+++ b/kubernetes/common/postgres-init/Chart.yaml
@@ -15,4 +15,4 @@
 apiVersion: v1
 description: Chart for Postgres init job
 name: postgres-init
-version: 8.0.0
+version: 9.0.0