[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/msb/components/msb-iag/requirements.yaml b/kubernetes/msb/components/msb-iag/requirements.yaml
index 1a256d1..3fea5d0 100644
--- a/kubernetes/msb/components/msb-iag/requirements.yaml
+++ b/kubernetes/msb/components/msb-iag/requirements.yaml
@@ -14,11 +14,11 @@
 # limitations under the License.
 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'
   - name: certInitializer
-    version: ~8.x-0
+    version: ~9.x-0
     repository: '@local'