flimflam-test: Clean up pylint errors in mm-* scripts

Fix spacing and pylint errors in mm-* scripts.

BUG=chromium-os:38166
TEST='ls | grep mm | xargs pylint' doesn't complain about these files.
Change-Id: I6658edc7f3bba27f0eb486f8e5190cf388f4a8bd
Reviewed-on: https://gerrit.chromium.org/gerrit/42324
Commit-Queue: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Tested-by: Christopher Wiley <wiley@chromium.org>