test-data: Qemu caps replies and xml for s390x qemu 2.7 and 2.8
    
    Expected Qemu replies for versions 2.7 and 2.8 from the s390x
    Qemu binary.
    
    Signed-off-by: Collin L. Walling <walling@linux.vnet.ibm.com>
    Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>