tox.ini: fix bugs, enable flake8 linting for all python versions

Author: manu-chroma

tox.ini

@@ -1,7 +1,6 @@
 [tox]
 envlist =
-  # py{27,33,34,35.36}-lint,
-  py27-lint
+  py{27,33,34,35,36}-lint,
   py{27,33,34,35,36}-unit,
   py35-mypy,
   py27-pipconflictchecker
@@ -11,17 +10,22 @@ skip_missing_interpreters = True
 
 [tox:travis]
 2.7 = py27
-3.3 = py33-unit
-3.4 = py34-unit
+3.3 = py33
+3.4 = py34
 3.5 = py35
-3.6 = py36-unit
+3.6 = py36
 
 [testenv]
-deps = -rrequirements.txt
-  # py{27,33,34,35,36}-lint: flake8
+deps =
+  -rrequirements.txt
+  py{27,33,34,35,36}-lint: flake8
 
 commands =
   py{27,33,34,35,36}-unit: python setup.py test
+  py{27,33,34,35,36}-lint: flake8 schema_salad setup.py
+
+whitelist_externals =
+  py{27,33,34,35,36}-lint: flake8
 
 [testenv:py35-mypy]
 commands = make mypy
@@ -30,11 +34,6 @@ deps =
   -rmypy_requirements.txt
   -rrequirements.txt
 
-[testenv:py27-lint]
-commands = flake8 schema_salad setup.py
-whitelist_externals = flake8
-deps = flake8
-
 [testenv:py27-pipconflictchecker]
 commands = pipconflictchecker
 whitelist_externals = pipconflictchecker