Refactor test_rpms.py to use the file:// scheme when possible.

Other changes:
1) I applied some PEP-8 to various files.
2) I removed some stray print statements.
3) I moved the pulp_unittest repo to a more descriptive path, easing
consolidation of tests that use that repository.
Remove stray index.html files that came from pulling down repos.
Merge branch 'rbarlow_test_rpms_file_scheme'