Fixup quotes in test.
Fixup quotes in test.

TBR=nodir@chromium.org

Bug:
Change-Id: I00ea6ecbb852538d2b9ad91b38e8386ff81491a9
Reviewed-on: https://chromium-review.googlesource.com/679775
Reviewed-by: Robbie Iannucci <40f3d43a28ebae3cb819288542e1c84d73d962d5@chromium.org>
Commit-Queue: Robbie Iannucci <40f3d43a28ebae3cb819288542e1c84d73d962d5@chromium.org>

luci/recipes-py,luci/recipes-py