diff --git a/tox.ini b/tox.ini
index 6df7a0e..a48ee36 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,102 +1,107 @@
-[tox]
-minversion = 2.0
-skipsdist = True
-envlist = docs,linters,functional
-
-
-[testenv]
-usedevelop = True
-install_command =
-    pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
-commands =
-    /usr/bin/find . -type f -name "*.pyc" -delete
-passenv =
-    COMMON_TESTS_PATH
-    HOME
-    http_proxy
-    HTTP_PROXY
-    https_proxy
-    HTTPS_PROXY
-    no_proxy
-    NO_PROXY
-    TESTING_BRANCH
-    TESTING_HOME
-    USER
-whitelist_externals =
-    bash
-setenv =
-    PYTHONUNBUFFERED=1
-    ROLE_NAME=os_masakari
-    TEST_IDEMPOTENCE=false
-    VIRTUAL_ENV={envdir}
-    WORKING_DIR={toxinidir}
-
-
-[testenv:docs]
-deps = -r{toxinidir}/doc/requirements.txt
-commands=
-    bash -c "rm -rf doc/build"
-    doc8 doc
-    sphinx-build -b html doc/source doc/build/html
-
-
-[doc8]
-# Settings for doc8:
-extensions = .rst
-
-
-[testenv:releasenotes]
-deps = -r{toxinidir}/doc/requirements.txt
-commands =
-    sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
-
-
-# environment used by the -infra templated docs job
-[testenv:venv]
-commands =
-    {posargs}
-
-
-[testenv:pep8]
-commands =
-    bash -c "{toxinidir}/tests/common/test-pep8.sh"
-
-
-[flake8]
-# Ignores the following rules due to how ansible modules work in general
-#     F403 'from ansible.module_utils.basic import *' used;
-#          unable to detect undefined names
-#     H303 No wildcard (*) import.
-ignore=F403,H303
-
-
-[testenv:bashate]
-commands =
-    bash -c "{toxinidir}/tests/common/test-bashate.sh"
-
-
-[testenv:ansible-syntax]
-commands =
-    bash -c "{toxinidir}/tests/common/test-ansible-syntax.sh"
-
-
-[testenv:ansible-lint]
-commands =
-    bash -c "{toxinidir}/tests/common/test-ansible-lint.sh"
-
-
-[testenv:functional]
-commands =
-    bash -c "{toxinidir}/tests/common/test-ansible-functional.sh"
-
-
-[testenv:linters]
-deps =
-    -r{toxinidir}/doc/requirements.txt
-commands =
-    bash -c "{toxinidir}/tests/common/test-ansible-env-prep.sh"
-    {[testenv:pep8]commands}
-    {[testenv:bashate]commands}
-    {[testenv:ansible-lint]commands}
-    {[testenv:ansible-syntax]commands}
-    {[testenv:docs]commands}
+[tox]
+minversion = 2.0
+skipsdist = True
+envlist = docs,linters,functional
+
+
+[testenv]
+usedevelop = True
+install_command =
+    pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
+commands =
+    /usr/bin/find . -type f -name "*.pyc" -delete
+passenv =
+    COMMON_TESTS_PATH
+    HOME
+    http_proxy
+    HTTP_PROXY
+    https_proxy
+    HTTPS_PROXY
+    no_proxy
+    NO_PROXY
+    TESTING_BRANCH
+    TESTING_HOME
+    USER
+whitelist_externals =
+    bash
+setenv =
+    PYTHONUNBUFFERED=1
+    ROLE_NAME=os_masakari
+    TEST_IDEMPOTENCE=false
+    VIRTUAL_ENV={envdir}
+    WORKING_DIR={toxinidir}
+
+
+[testenv:docs]
+basepython = python3
+deps = -r{toxinidir}/doc/requirements.txt
+commands=
+    bash -c "rm -rf doc/build"
+    doc8 doc
+    sphinx-build -b html doc/source doc/build/html
+
+
+[doc8]
+# Settings for doc8:
+extensions = .rst
+
+
+[testenv:releasenotes]
+basepython = python3
+deps = -r{toxinidir}/doc/requirements.txt
+commands =
+    sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
+
+
+# environment used by the -infra templated docs job
+[testenv:venv]
+basepython = python3
+commands =
+    {posargs}
+
+
+[testenv:pep8]
+basepython = python3
+commands =
+    bash -c "{toxinidir}/tests/common/test-pep8.sh"
+
+
+[flake8]
+# Ignores the following rules due to how ansible modules work in general
+#     F403 'from ansible.module_utils.basic import *' used;
+#          unable to detect undefined names
+#     H303 No wildcard (*) import.
+ignore=F403,H303
+
+
+[testenv:bashate]
+commands =
+    bash -c "{toxinidir}/tests/common/test-bashate.sh"
+
+
+[testenv:ansible-syntax]
+commands =
+    bash -c "{toxinidir}/tests/common/test-ansible-syntax.sh"
+
+
+[testenv:ansible-lint]
+commands =
+    bash -c "{toxinidir}/tests/common/test-ansible-lint.sh"
+
+
+[testenv:functional]
+commands =
+    bash -c "{toxinidir}/tests/common/test-ansible-functional.sh"
+
+
+[testenv:linters]
+basepython = python3
+deps =
+    -r{toxinidir}/doc/requirements.txt
+commands =
+    bash -c "{toxinidir}/tests/common/test-ansible-env-prep.sh"
+    {[testenv:pep8]commands}
+    {[testenv:bashate]commands}
+    {[testenv:ansible-lint]commands}
+    {[testenv:ansible-syntax]commands}
+    {[testenv:docs]commands}