Merge pull request #3137 from solarissmoke/fix/coverage

Fix coverage reporting on travis

.travis.yml

 
 
 after_success:
-  - tox -e coverage-report
   - codecov

setup.py

     'py>=1.4.31',
     'psycopg2>=2.7,<2.8',
     'pytest>=4.0,<4.5',
-    'pytest-cov==2.6.1',
     'pytest-django==3.4.8',
     'pytest-xdist>=1.25,<1.28',
     'tox>=3.0,<3.9',

tox.ini

     pytest {posargs}
 
 
-[testenv:coverage-report]
-basepython = python3.6
-deps = coverage
-skip_install = true
-commands =
-    coverage combine
-    coverage report
-
-
 [testenv:lint]
 basepython = python3.6
 deps =