[SDC] Add missing dependency to cassandra chart

In case of "localCluster: true" the cassandra chart will be added
in sdc-cs subchart. Renamed global section to sdc-cassandra.
Additionally serviceAccount is added to
cassandra definition in sdc-cs (see OOM-2905)

Issue-ID: OOM-2899

Signed-off-by: Andreas Geissler <andreas-geissler@telekom.de>
Change-Id: Id943db249a3abd9dbc67e333a05f6c2abd84a810
diff --git a/kubernetes/sdc/components/sdc-be/values.yaml b/kubernetes/sdc/components/sdc-be/values.yaml
index 0449648..7b11692 100644
--- a/kubernetes/sdc/components/sdc-be/values.yaml
+++ b/kubernetes/sdc/components/sdc-be/values.yaml
@@ -19,7 +19,7 @@
 global:
   nodePortPrefix: 302
   aafEnabled: true
-  cassandra:
+  sdc_cassandra:
     #This flag allows SDC to instantiate its own cluster, serviceName
     #should be sdc-cs if this flag is enabled
     localCluster: false