'Get the currently known host CPU stats.
:returns: a dict containing the CPU stat info, eg:
| {\'kernel\': kern,
|  \'idle\': idle,
|  \'user\': user,
|  \'iowait\': wait,
|   \'frequency\': freq},
where kern and user indicate the cumulative CPU time
(nanoseconds) spent by kernel and user processes
respectively, idle indicates the cumulative idle CPU time
(nanoseconds), wait indicates the cumulative I/O wait CPU
time (nanoseconds), since the host is booting up; freq
indicates the current CPU frequency (MHz). All values are
long integers.'

def get_host_cpu_stats(self):

    raise NotImplementedError()
