(maint) Remove 'foo' module

'foo' modules was used to test the setup code with multiple modules;
removed now that integration is working.
(maint) Add post steps clean-up

Post perf tests, we want to sanitize the environment before re-running.
(maint) Add step to fix auth.conf mode/ownership
Merge pull request #4 from djm68/master

Merge Dom's fixes to ChrisP's repo