Fix flake8 failures

Right now tox -e pep8 in this project fails due to some violations
in the tempest element.  Those will need to be fixed before we can
do any gating on pep8-type tests.

Change-Id: I8c63e9db4e86ef6209ef7676ee0c5ca289845f96
Add +x to executable files

There are a few in the tree that don't have it and should.  This
will allow future enforcement of this to avoid files being
committed with the wrong mode set.

Change-Id: Ie22a663a230f087b678c01a16219e1c5b7e237c0
Merge "Fix flake8 failures"
Merge "Add +x to executable files"