Fix OpenStack unit tests
Do not hardcode path to glite site info
Do not set complete suffix when not being a BDII

Change 5c9d10b9 introduced a subtle change, setting the suffix to

    'GLUE2DomainID='+site_info['site_name']+',o=glue'

even if it was not needed because the site already had a BDII running.
This change reverts this.
Fix unit test for static provider
Some PEP8 errors
Add 'noqa' comments to pass flake8 tests

I should fix this when I have some time
Use exceptions instead of sys.exit

Closes #3
Use our own exception instead of Exception
Use single quotes instead of double ones whenever possible
Remove "old" directory and its contents

Why is this even here?