[COMMON] Fix URL override for cassandra backup cronjob

It is not possible to override Cassandra backup cronjob image URL currently. This might cause the problem if non standard repository is used. This patch is fixing that issue.

Issue-ID: OOM-2608
Signed-off-by: Marat Salakhutdinov <marat.salakhutdinov@bell.ca>
Change-Id: I1eb0a97d1a852d16f8d1662f543c3f583e873a5d
diff --git a/kubernetes/common/cassandra/templates/backup/cronjob.yaml b/kubernetes/common/cassandra/templates/backup/cronjob.yaml
index cabe59f..b242de2 100644
--- a/kubernetes/common/cassandra/templates/backup/cronjob.yaml
+++ b/kubernetes/common/cassandra/templates/backup/cronjob.yaml
@@ -149,7 +149,7 @@
                 subPath: exec.py
           containers:
             - name: cassandra-backup-validate
-              image: "{{ .Values.image }}"
+              image: "{{ include "common.repository" . }}/{{ .Values.image }}"
               imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
               command:
               - /bin/bash