This test case will prevent future regressions with savevm and
IOThreads.
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Message-id: 20171207201320.19284-7-stefanha@redhat.com
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>