Add pep8 import order check

Set flake8-import-order version to 0.17.1
Full py3 compatible version.
Add all Python3 modules to stdlib list.
Also includes fix to an enum34 dependency bug.

Change-Id: I58dd80fc33942656c69ce67ee523a1d57f693e93

ansible/action_plugins/tenks_update_state.py

@@ -14,6 +14,7 @@
 
 # Avoid shadowing of system copy module by copy action plugin.
 from __future__ import absolute_import
+
 import abc
 from copy import deepcopy
 import itertools

ansible/roles/virtualbmc-domain/library/virtualbmc_domain.py

@@ -12,12 +12,12 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from ansible.module_utils.basic import AnsibleModule # noqa
-
 import json
 import os.path
 import time
 
+from ansible.module_utils.basic import AnsibleModule # noqa
+
 
 DOCUMENTATION = '''
 ---

test-requirements.txt

@@ -6,3 +6,5 @@ ansible-lint>=3.0.0 # MIT
 coverage>=4.5.1 # Apache-2.0
 flake8>=3.5.0 # MIT
 stestr>=1.0.0 # Apache-2.0
+flake8-import-order>=0.17.1 # LGPLv3
+

tests/test_tenks_update_state.py

@@ -13,13 +13,14 @@
 # under the License.
 
 from __future__ import absolute_import
+
 import copy
 import imp
 import os
+import unittest
 
 from ansible.errors import AnsibleActionFail
 import six
-import unittest
 
 
 # Python 2/3 compatibility.

tests/test_tenks_wait_for_resources.py

@@ -13,6 +13,7 @@
 # under the License.
 
 from __future__ import absolute_import
+
 import copy
 import imp
 import json
@@ -21,7 +22,6 @@ import random
 from itertools import repeat, chain, cycle
 
 from ansible.module_utils import basic
-
 from tests.utils import ModuleTestCase, set_module_args, AnsibleExitJson, \
     AnsibleFailJson
 

tests/utils.py

@@ -1,5 +1,4 @@
 import json
-
 import unittest
 
 from ansible.module_utils import basic

tox.ini

@@ -87,3 +87,6 @@ show-source = True
 extend-ignore = E123,E125
 builtins = _
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build
+import-order-style = pep8
+application-import-names = tenks
+filename = *.py