Fixes test scripts with wrong bitmode

Some modules have bitmode 755. Changed to 644

Added a redundant blank line according to hacking's import template.
https://github.com/openstack-dev/hacking/blob/master/HACKING.rst

This was done to avoid merged errors in gerrit which happens
if no content has changed.

Partially fixes bug #1224226

Change-Id: I8077035eea8ee3be4d17a992788a4a6b959fc171
Merge "Fixes test scripts with wrong bitmode"