Add coveralls call to service github

Author: MichaelsJP

.github/workflows/ci-tests.yml

@@ -28,6 +28,6 @@ jobs:
         nosetests --with-coverage --cover-erase --cover-package=openrouteservice -v
     - name: coveralls
       run: |
-        coveralls
+        coveralls --service=github
       env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}