Merge "fix tox python3 overrides"

tox.ini

@@ -11,6 +11,7 @@ deps = -r{toxinidir}/test-requirements.txt
 whitelist_externals = bash
 
 [testenv:bindep]
+basepython = python3
 # Do not install any requirements. We want this to be fast and work even if
 # system dependencies are missing, since it's used to tell you what system
 # dependencies are missing! This also means that bindep must be installed
@@ -19,6 +20,7 @@ deps = bindep
 commands = bindep test
 
 [testenv:docs]
+basepython = python3
 commands = python setup.py build_sphinx
 
 [testenv:bashate]
@@ -27,6 +29,7 @@ commands =
     python -m pre_commit run bashate --all-files
 
 [testenv:pep8]
+basepython = python3
 envdir = {toxworkdir}/linters
 commands =
     python -m pre_commit run flake8 --all-files
@@ -37,10 +40,12 @@ commands =
     python -m pre_commit run ansible-lint -a
 
 [testenv:releasenotes]
+basepython = python3
 whitelist_externals = bash
 commands = bash -c ci-scripts/releasenotes_tox.sh
 
 [testenv:linters]
+basepython = python3
 commands =
     # check only modified files:
     python -m pre_commit run --source HEAD^ --origin HEAD
@@ -49,6 +54,7 @@ commands =
     {[testenv:validate-jinja]commands}
 
 [testenv:venv]
+basepython = python3
 commands = {posargs}
 
 [flake8]