osd: Add cephcluster status for deprecated osds to replace (backport #14187)

[mergify[bot]]

To follow up from #14100, we add status to the cephcluster CR that at least gives a clue that the OSDs should be replaced. LVM-based OSDs on PVCs are legacy and are not well tested, so this is a small attempt to raise that fact in the status, even while we still attempt to keep them running.

This will result in status on the CephCluster such as:

  status:
    storage:
      deviceClasses:
      - name: hdd
      legacyOSDs:
      - id: 0
        reason: LVM-based OSD on a PVC (id=0) is deprecated and should be replaced
      - id: 1
        reason: LVM-based OSD on a PVC (id=1) is deprecated and should be replaced
      - id: 2
        reason: LVM-based OSD on a PVC (id=2) is deprecated and should be replaced
      osd:
        storeType:
          bluestore: 3

Checklist:

• [ ] Commit Message Formatting: Commit titles and messages follow guidelines in the developer guide.
• [ ] Reviewed the developer guide on Submitting a Pull Request
• [ ] Pending release notes updated with breaking and/or notable changes for the next minor release.
• [ ] Documentation has been updated, if necessary.
• [ ] Unit tests have been added, if necessary.
• [ ] Integration tests have been added, if necessary.

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  This is an automatic backport of pull request #14187 done by Mergify.