tests: cpu-hotplug: Add data for ppc64 platform including hotplug
    
    Power 8 platform's basic hotpluggable unit is a core rather than a
    thread for x86_64 family. This introduces most of the complexity of the
    matching code and thus needs to be tested.
    
    The test data contain data captured from in-order cpu hotplug and
    unplug operations.