bdev_ubi-0.3 fixes several error handling bugs. It also instruments SPDK
to log iobuf sizes, which will be helpful if crashes happen.
To install this version on a host and remove the previous version, first
drain the host from VMs. And then:
```
setup_st = Prog::Storage::SetupSpdk.assemble(
vmh.id, "v23.09-ubi-0.3",
start_service: true, allocation_weight: 100)
remove_st = Prog::Storage::RemoveSpdk.assemble(
vmh.spdk_installations_dataset.where(
version:"v23.09-ubi-0.2").first.id)
```
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