Enable coveralls. See https://coveralls.io
Actually trigger the coverage data gathering.
Let's know where(CWD) is the suite running from.
Add the `.coveragerc` file and some debugging output to see if the coverage file is generated.
Fix SyntaxError.
Even more info from travis env.
Switch coveralls python library.
Output the coverage pickled data.
Try to enforce a know path.
Switch lib and verbose output.
Let coverage run the tests suite.
Finally working. Cleaning up.
Merge pull request #5328 from s0undt3ch/features/coveralls

Historical coverage stats