Add overhead to requested size when creating DVs

[mansam]

This attempts to get the storage class filesystem overhead map from the CDIConfig. If it can't be found, it uses the default overhead defined in CDI. The size of PVCs requested by the mapper is increased by the percentage defined in the map for that PVC's storage class, or by the default if no value was specified for that storage class.

https://bugzilla.redhat.com/show_bug.cgi?id=1864577

Signed-off-by: Sam Lucidi slucidi@redhat.com

[kubevirt-bot]

@mansam: Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

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[ghost]

LGTM

[kubevirt-bot]

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