flimflam-test: Fix spacing to align with autotest

These three files were written with 2 spaces, which is admirable and
pure of heart, but not PEP-8 or autotest compliant.  Fix this.  Along
the way clean up little pylint nits.

TEST=Pylint whines less.

Change-Id: I66aaa7cf7036eacd6163ed9a9170653df90815e9
Reviewed-on: https://gerrit.chromium.org/gerrit/42308
Commit-Queue: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Tested-by: Christopher Wiley <wiley@chromium.org>
3 files changed