Code review comment for lp:~james-w/launchpad/fix-getRequestedReviews

Hi,

This fixes a bug with my getRequestedReviews implementation, which
was basically that I fail at reading docstrings.

This switches it to use the method that matches what getRequestedReviews
says that it will do, and modifies the test so that it should set up
an environment that will distinguish the two.

It is however untested.

Thanks,

James