pep8 improvements on bok-choy tests.

@jzoldak @muhammad-ammar @clytwynec 
I'm not sure this one needed to be changed.   The closing parenthesis should be on the same indentation level as the line that has the opening one, not on the same indentation level as the actual opening parenthesis... https://github.com/edx/edx-platform/wiki/Python-Guidelines#breaking-long-lines


Was this being reported as a as a bad line in the quality reports?