fixup! fixup! Travis: report coverage with all builds

Author: blueyed

tox.ini

@@ -25,7 +25,7 @@ setenv =
     coverage: _PYTEST_TOX_EXTRA_DEP=coverage-enable-subprocess
     coverage: COVERAGE_FILE={toxinidir}/.coverage
     coverage: COVERAGE_PROCESS_START={toxinidir}/.coveragerc
-passenv = USER USERNAME COVERAGE_PROCESS_START
+passenv = USER USERNAME COVERAGE_FILE COVERAGE_PROCESS_START
 deps =
     hypothesis>=3.56
     nose