Operator in degraded mode
=========================

Annotation
----------

``maxDegraded`` field can be specified not only for the whole OpenStack service
but also for each individual component such as ``api``, ``proxy`` or ``db``,
so we have to specify the annotation **state.yaook.cloud/max-degradation**
to transfer the ``maxDegraded`` field from the specific CRD to the related
``Deployment``, ``StatefulSet``, ``DaemonSet`` or ``ConfiguredDaemonSet``,
because *_is_ready* function checks these resources and it is not possible to check
the ``maxDegraded`` via *ctx.parent*.
The reason is that the label ``state.yaook.cloud/component`` does not always match
the corresponding component field in the CRD.