[COMMON] Provide convenience templates for mariadb secrets

Usage of plain strings is very fragile especially when you try
to change them. That's why instead of depending on strings let's
just define a few convenience templates to be used in projects
that use mariadb-galera chart.

Issue-ID: OOM-2249
Change-Id: Ib867d34090b06a15ea3898a9524f5e3d04a656c0
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
diff --git a/kubernetes/common/mariadb-galera/templates/backup/cronjob.yaml b/kubernetes/common/mariadb-galera/templates/backup/cronjob.yaml
index 69a8490..c9e2ffe 100644
--- a/kubernetes/common/mariadb-galera/templates/backup/cronjob.yaml
+++ b/kubernetes/common/mariadb-galera/templates/backup/cronjob.yaml
@@ -86,7 +86,7 @@
               echo "Backup Successful!!!"
             env:
             - name: DB_PASS
-              {{- include "common.secret.envFromSecret" (dict "global" . "uid" "db-root-password" "key" "password") | indent 14}}
+              {{- include "common.secret.envFromSecret" (dict "global" . "uid" (include "common.mariadb.secret.rootPassUID" .) "key" "password") | indent 14}}
             volumeMounts:
             - name: backup-dir
               mountPath: /backup
@@ -96,7 +96,7 @@
             imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
             env:
             - name: MYSQL_ROOT_PASSWORD
-              {{- include "common.secret.envFromSecret" (dict "global" . "uid" "db-root-password" "key" "password") | indent 14}}
+              {{- include "common.secret.envFromSecret" (dict "global" . "uid" (include "common.mariadb.secret.rootPassUID" .) "key" "password") | indent 14}}
             command:
             - /bin/bash
             - -c