--- prelude: > Added new tool ``zaqar-status upgrade check``. features: - | New framework for ``zaqar-status upgrade check`` command is added. This framework allows adding various checks which can be run before a Zaqar upgrade to ensure if the upgrade can be performed safely. upgrade: - | Operator can now use new CLI tool ``zaqar-status upgrade check`` to check if Zaqar deployment can be safely upgraded from N-1 to N release.