Use absolut Path for config.ini

[rgruebel]

If you run the service from a working directory other than the connector.py path we need an aboslout path to the config.ini.
For now i solved it like this:
os.path.join(os.path.abspath(os.path.dirname(__file__)), 'config.ini')

[nohum]

Thanks for reporting! I added your solution.