[influxdb] helm_charts influxdb, backup_cronjob template has misconfiguration.

[plalwa]

    ```
  - name: AZURE_STORAGE_CONNECTION_STRING
            valueFrom:
              secretKeyRef:
                name: {{ .Values.backup.azure.storageAccountSecret }}
                key: connection-string

the template causes it to fail with below error  `spec.jobTemplate.spec.template.spec.containers[0].env[3].valueFrom.secretKeyRef.name: Invalid value: `