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