osd: Prevent osd reconcile when device set names duplicated (backport #14002) #14065
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If device set names are duplicated, the OSDs will be very confused when multiple OSDs attempt to be configured with the same device set names. Updating the device set names does not help get out of the error situation since the OSDs will also be confused about which device set they belong to. The reconcile must fail completely if the device set names are duplicated to avoid this error scenario.
Checklist:
This is an automatic backport of pull request #14002 done by [Mergify](https://mergify.com).