Revert "Cleanup py27 support"

This reverts commit 0dc6efc732.

Change-Id: If64bb8d103f853c7ea2ed1d28c99e39501d687de

.zuul.yaml

@@ -5,13 +5,13 @@
       jobs:
         - openstack-tox-pep8
         - openstack-tox-py36
-        - openstack-tox-py38
+        - openstack-tox-py37
         - openstack-tempest-skiplist-validate
     gate:
       jobs:
         - openstack-tox-pep8
         - openstack-tox-py36
-        - openstack-tox-py38
+        - openstack-tox-py37
         - openstack-tempest-skiplist-validate
 
 - job:

setup.cfg

@@ -6,7 +6,6 @@ description-file =
 author = OpenStack
 author-email = openstack-discuss@lists.openstack.org
 home-page = https://pypi.org/project/openstack-tempest-skiplist
-python-requires = >=3.6
 classifier =
     Environment :: OpenStack
     Intended Audience :: Information Technology
@@ -14,8 +13,6 @@ classifier =
     License :: OSI Approved :: Apache Software License
     Operating System :: POSIX :: Linux
     Programming Language :: Python
-    Programming Language :: Python :: Implementation :: CPython
-    Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.6
 
@@ -31,3 +28,16 @@ console_scripts =
     tempest-skip = tempest_skip.main:main
 tempest_skip.cm =
     validate = tempest_skip.validate:Validate
+
+[build_sphinx]
+source-dir = doc/source
+build-dir = doc/build
+all_files = 1
+
+[upload_sphinx]
+upload-dir = doc/build/html
+
+[build_releasenotes]
+all_files = 1
+build-dir = releasenotes/build
+source-dir = releasenotes/source

setup.py

@@ -13,8 +13,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT
 import setuptools
 
+# In python < 2.7.4, a lazy loading of package `pbr` will break
+# setuptools if some other modules registered functions in `atexit`.
+# solution from: http://bugs.python.org/issue15881#msg170215
+try:
+    import multiprocessing  # noqa
+except ImportError:
+    pass
+
 setuptools.setup(
     setup_requires=['pbr>=1.8'],
     pbr=True)

test-requirements.txt

@@ -2,6 +2,6 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking>=3.1.0,<3.2.0 # MIT
+flake8<3.0.0 # MIT
 oslotest>=3.2.0 # Apache-2.0
-stestr>=1.1.0 # Apache-2.0
+stestr>=1.1.0 # Apache-2.0

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.1.1
-envlist = py38,py36,pypy,pep8
+envlist = py37,py36,pypy,pep8
 skipsdist = True
 # this allows tox to infer the base python from the environment name
 # and override any basepython configured in this file
@@ -9,12 +9,12 @@ ignore_basepython_conflict = true
 [testenv]
 basepython = python3
 usedevelop = True
+install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master} {opts} {packages}
 setenv =
    VIRTUAL_ENV={envdir}
    PYTHONWARNINGS=default::DeprecationWarning
 whitelist_externals = *
 deps =
-    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt
 commands =
@@ -41,10 +41,13 @@ commands =
     coverage report
 
 [testenv:docs]
-deps =
-  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
-  -r{toxinidir}/doc/requirements.txt
-commands = sphinx-build -W -b html doc/source doc/build/html
+deps = -r{toxinidir}/doc/requirements.txt
+commands = sphinx-build -b html doc/source doc/build/html
+
+[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
 
 [testenv:debug]
 commands = oslo_debug_helper {posargs}