Daniel Bennett c6dbba7cde csi: implement ControllerExpandVolume (#18359) ...

the first half of volume expansion,
this allows a user to update requested capacity
("capacity_min" and "capacity_max") in a volume
specification file, and re-issue either Register
or Create volume commands (or api calls).

the requested capacity will now be "reconciled"
with the current real capacity of the volume,
issuing a ControllerExpandVolume RPC call
to a running controller plugin, if requested
"capacity_min" is higher than the current
capacity on the volume in state.

csi spec:
https://github.com/container-storage-interface/spec/blob/c918b7f/spec.md#controllerexpandvolume

note: this does not yet cover NodeExpandVolume

2023-09-14 14:13:04 -05:00

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