Let the Ceph drivers wait for volume resizes

[roosterfish]

During the introduction of the storage connectors package (#14710) we found that we have to wait for volume resizes to take effect on the actual block device mapped to the system before continuing on (e.g. moving the GPT alternative header) as the size might not yet be reflected.

This potentially also affects the Ceph storage drivers.
Make sure when resizing Ceph volumes to wait for the actual disk device to reflect the new size using the WaitDiskDeviceResize func.