fix tox python3 overrides
We want to default to running all tox environments under python 3, so
set the basepython value in each environment.
We do not want to specify a minor version number, because we do not
want to have to update the file every time we upgrade python.
We do not want to set the override once in testenv, because that
breaks the more specific versions used in default environments like
py35 and py36.
Change-Id: I86a48214708a9169996b1dfa7eb9a825dfb3468e
diff --git a/tox.ini b/tox.ini
index 5a4d525..d7cf22d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,18 +13,23 @@
commands = python setup.py test --slowest --testr-args='{posargs}'
[testenv:pep8]
+basepython = python3
commands = flake8 {posargs}
[testenv:venv]
+basepython = python3
commands = {posargs}
[testenv:cover]
+basepython = python3
commands = python setup.py test --coverage --testr-args='{posargs}'
[testenv:docs]
+basepython = python3
commands = python setup.py build_sphinx
[testenv:debug]
+basepython = python3
commands = oslo_debug_helper {posargs}
[flake8]