Disabling ppc64le hosts for Qemu tests

[Andrew Jeffery]

On Tue, 13 Nov 2018, at 15:38, Joel Stanley wrote:
> Hello Andrew,
> 
> I've been trying to get to the bottom of the slow-booting qemu issue
> for a few weeks now. We commited a fix that resolve the issue on x86
> hosts, but when running the same Qemu build on ppc64le it still has
> the "go slow" behaviour.
> 
>  https://github.com/openbmc/qemu/issues/14
> 
> I propose we run the Romulus Qemu boot test on x86-only build slaves
> while we work this out. That will allow us to unblock the kernel
> security bumps, which have been pending for a few weeks.

I'm on-board with this interim solution. Need to spend some time with
qemu to figure out what the actual bug is.

> 
> I'll continue working on fixing Qemu in the future, but I don't have
> time for the next two weeks due to some higher priority work.
> 
> Cheers,
> 
> Joel