Auto-sync resource's statefulset volumeClaimTemplates annotation changes to existing PVC

[Haleygo]

After the PVC creation, the StatefulSet no longer controls the PVC, so changes to the StatefulSet’s volumeClaimTemplates are not synchronized with the PVC, see this issue.
So for CR like vmagent, vmcluster, changes to xxxStorage.volumeClaimTemplate.metadata.annotations aren’t synced to existing PVCs and require manual PVC edits. It would be nice if vm-operator could auto-sync such changes, just as it does for storage size.

[AndrewChubatiuk]

this cannot be easily implemented, since you don't know in advance which annotations are automatically added. it's possible to add them only, but not remove.