Make logging of radosgw optional

For production environments ops and usage logs are deactivated to improve
the overall perfomance. A new parameter is introduced to switch the logs
on again.

Signed-off-by: Marc Koderer <m.koderer@telekom.de>
Merge pull request #13 from TelekomCloud/bug/TPMCAP-282-deactivate_logging

Make logging of radosgw optional

Reviewed-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>