Add tests for single_version project with CNAME.
Remove unused stuff from nginx-smoke-test.py.
Remove comments in nginx-smoke-test.py.

Unnecessary...and some are out-of-date already!
Wrap long line in nginx-smoke-test.py.
Merge pull request #612 from toffer/more-smoke-test-tweaks

Add tests to nginx-smoke-test.py. Plus, clean up.