-r common.txt
coveralls==1.1
mock==2.0.0
pytest==3.0.7
pytest-cov==2.4.0
tox==2.6.0

-r common.txt
coveralls==1.1
mock==2.0.0
pytest==3.0.7
pytest-cov==2.4.0
tox==2.7.0

Update tox from 2.6.0 to 2.7.0
Update tox from 2.6.0 to 2.7.0