conan-io#146 Pass env var through tox

Signed-off-by: Uilian Ries <[email protected]>

Author: uilianries

tox.ini

@@ -21,7 +21,7 @@ setenv =
     coverage: COVERAGE_FILE={toxinidir}/.coverage
     coverage: PYTESTDJANGO_COVERAGE_SRC={toxinidir}/
 
-passenv = PYTEST_ADDOPTS
+passenv = PYTEST_ADDOPTS USE_UNSUPPORTED_CONAN_WITH_PYTHON_2
 
 commands =
     coverage: coverage erase