Improve testing infrastructure

* Add py37 tox env
* Fix pep8 error
* Add zuul.d structure

Signed-off-by: Gael Chamoulaud (Strider) <gchamoul@redhat.com>

.pre-commit-config.yaml

@@ -11,6 +11,6 @@ repos:
       - id: check-merge-conflict
       - id: debug-statements
       - id: flake8
-        entry: flake8 --ignore=E24,E121,E122,E123,E124,E126,E226,E265,E305,E402,F401,F405,E501,E704,F403,F841,W503,W605
+        #entry: flake8 --ignore=E24,E121,E122,E123,E124,E126,E226,E265,E305,E402,F401,F405,E501,E704,F403,F841,W503,W605
       - id: check-yaml
         files: .*\.(yaml|yml)$

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.0
-envlist = linters
+envlist = linters,py37
 skipdist = True
 
 [testenv]

validations_libs/tests/fakes.py

@@ -13,8 +13,6 @@
 #   under the License.
 #
 
-import mock
-
 
 VALIDATIONS_LIST = [{
     'description': 'My Validation One Description',

zuul.d/layout.yaml

@@ -0,0 +1,14 @@
+- project:
+    templates:
+    - tripleo-multinode-container-minimal
+    - openstack-python3-ussuri-jobs
+    - check-requirements
+    - release-notes-jobs-python3
+    check:
+      jobs:
+      - openstack-tox-linters
+      - openstack-tox-lower-constraints
+    gate:
+      jobs:
+      - openstack-tox-linters
+      - openstack-tox-lower-constraints