[PATCH] qemu: capabilities: update qemu-4.2 capabilities for s390x

[Peter Krempa]

On Wed, Mar 25, 2020 at 08:06:20 +0100, Bjoern Walk wrote:
> Update s390x capabilities for QEMU 4.2 with the actual GA version for
> QEMU and on the latest z15 machine.

I'm not familiar with the machine so I don't want to review the CPU
changes caused by using a different machine.

> This picks up the new blockdev capability, so we need to refresh a bunch
> of test cases as well.


For the blockdev bits (including backingStoreInput change):
Reviewed-by: Peter Krempa <pkrempa at redhat.com>