[COMMON] Adding Common Template for cassa-operator

- K8ssandraCluster resources template file added
- Modification of the cassandra chart to add the option to install
  cassandra using the k8ssandra-operator
- AAI and SDC values changed to support the new cassandra settings
- Fix for SDC cql version in jobs
- for London make k8ssandra-operator optional (default: false)

Issue-ID: OOM-3168
Signed-off-by: Dasarathi, Swain (ds00528024) <ds00528024@techmahindra.com>
Change-Id: Idfe232460c9c1f584536e60ea042345d7dca3164
diff --git a/kubernetes/common/cassandra/templates/backup/cronjob.yaml b/kubernetes/common/cassandra/templates/backup/cronjob.yaml
index 27f3cc6..e2f675a 100644
--- a/kubernetes/common/cassandra/templates/backup/cronjob.yaml
+++ b/kubernetes/common/cassandra/templates/backup/cronjob.yaml
@@ -14,6 +14,8 @@
 # limitations under the License.
 */}}
 {{- if .Values.backup.enabled }}
+{{- if .Values.k8ssandraOperator.enabled }}
+{{ else }}
 apiVersion: batch/v1beta1
 kind: CronJob
 metadata:
@@ -243,3 +245,4 @@
             persistentVolumeClaim:
               claimName: {{ include "common.fullname" . }}-backup-data
 {{- end -}}
+{{- end -}}
\ No newline at end of file