[DOC][COMMON] Prepare Honolulu release

Updating the documentation and bumping version to 8.0.0

Issue-ID: OOM-1
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
Change-Id: I6f942f1466fed64264c44fb8fc0e1ffc93a98f18
diff --git a/kubernetes/common/cassandra/Chart.yaml b/kubernetes/common/cassandra/Chart.yaml
index 704ea21..573e7d9 100644
--- a/kubernetes/common/cassandra/Chart.yaml
+++ b/kubernetes/common/cassandra/Chart.yaml
@@ -16,4 +16,4 @@
 apiVersion: v1
 description: ONAP cassandra
 name: cassandra
-version: 7.0.0
+version: 8.0.0