qa/536 failing after recent pmiostat changes?

[Ken McDonell <kenj@xxxxxxxxxxxxxxxx>]

[75%] 536 1s ... - output mismatch (see 536.out.bad)
68a69,72
> Traceback (most recent call last):
>   File "/usr/bin/pmiostat", line 228, in <module>
>     except BrokenPipeError:
> NameError: name 'BrokenPipeError' is not defined
74a79,82
> Traceback (most recent call last):
>   File "/usr/bin/pmiostat", line 228, in <module>
>     except BrokenPipeError:
> NameError: name 'BrokenPipeError' is not defined