ci: Travis: coverage combine

Author: blueyed

.travis.yml

@@ -31,6 +31,7 @@ script:
   - tox
 after_script:
   - if [ $CI_TARGET = tests ]; then
+      coverage combine;
       coverage report -m;
       coverage xml;
       bash <(curl --retry 5 --silent --fail https://codecov.io/bash) -f coverage.xml;