Merge "fix tox python3 overrides"

tox.ini

@@ -4,7 +4,6 @@ minversion = 2.3
 skipsdist = True
 
 [testenv]
-basepython = python3
 install_command = pip install -U {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
          OS_STDOUT_CAPTURE=1
@@ -13,6 +12,7 @@ setenv = VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/test-requirements.txt
 
 [testenv:linters]
+basepython = python3
 whitelist_externals = bash
 #bashate ignore
 #E006 Line too long
@@ -100,6 +100,7 @@ ignore = E101,E121,E123,E124,E125,E126,E127,E128,E201,E202,E203,E211,E221,E222,E
          F401,F841
 
 [testenv:pep8]
+basepython = python3
 usedevelop = False
 skip_install = True
 deps =
@@ -110,6 +111,7 @@ commands =
     flake8
 
 [testenv:venv]
+basepython = python3
 commands = {posargs}
 
 [testenv:docs]
@@ -131,6 +133,7 @@ whitelist_externals =
     reno
 
 [testenv:newnote]
+basepython = python3
 # Re-use the releasenotes venv
 envdir = {toxworkdir}/releasenotes
 deps = -r{toxinidir}/doc/requirements.txt