coveralls integration is currently disabled

[bd82]

https://github.com/SAP/code-snippet/blob/master/.circleci/config.yml#L20-L26

[bd82]

We should try to re-enable it in a day or two and see if the issues have been resolved.
Note that I cannot even logon to coveralls using their web interface so I suspect the issue is not related to anything in this repo.