feature/M095M01A-36 [MAGENTO 2] Resolve empty cache problem with readMaintenanceIp
feature/M095M01A-36 [MAGENTO 2] Resolve empty cache problem with readMaintenanceIp

- Add default iterable $data definition when maintenance ip cache is empty

fastly/fastly-magento2,fastly/fastly-magento2,fastly/fastly-magento2,fastly/fastly-magento2