Make sys.path hack in _get_credentials.py script slightly less horrible
Make sys.path hack in _get_credentials.py script slightly less horrible

Rather than adding the path to the auto_nag/bugzilla package to
sys.path, use the actual project root path, and then import stuff from
auto_nag.bugzilla.

mozilla/relman-auto-nag,mozilla/relman-auto-nag,mozilla/bztools,mozilla/relman-auto-nag