Stop testing python2.7

Train was the last release supporting python2. Let's rip the bandaid off.

Change-Id: If1fe0e7d8897e56ca485157dcb75bea7b1d77e47

.zuul.yaml

@@ -1,16 +1,3 @@
-- job:
-    name: os-client-config-tox-py27-tips
-    parent: openstack-tox-py27
-    description: |
-      Run tox python 27 unittests against master of important libs
-    vars:
-      tox_install_siblings: true
-      zuul_work_dir: src/opendev.org/openstack/os-client-config
-    required-projects:
-      - openstack/keystoneauth
-      - openstack/openstacksdk
-      - openstack/os-client-config
-
 - job:
     name: os-client-config-tox-py37-tips
     parent: openstack-tox-py37
@@ -28,21 +15,17 @@
     name: os-client-config-tox-tips
     check:
       jobs:
-        - os-client-config-tox-py27-tips
         - os-client-config-tox-py37-tips
     gate:
       jobs:
-        - os-client-config-tox-py27-tips
         - os-client-config-tox-py37-tips
 
 - project:
     templates:
       - check-requirements
-      - lib-forward-testing
       - lib-forward-testing-python3
       - openstack-lower-constraints-jobs
-      - openstack-python-jobs
-      - openstack-python3-train-jobs
+      - openstack-python3-ussuri-jobs
       - os-client-config-tox-tips
       - publish-openstack-docs-pti
       - release-notes-jobs-python3
@@ -50,7 +33,9 @@
       - shade-tox-tips
     check:
       jobs:
+        - openstack-tox-pep8
         - osc-functional-devstack-tips
     gate:
       jobs:
+        - openstack-tox-pep8
         - osc-functional-devstack-tips

setup.cfg

@@ -13,8 +13,6 @@ classifier =
     License :: OSI Approved :: Apache Software License
     Operating System :: POSIX :: Linux
     Programming Language :: Python
-    Programming Language :: Python :: 2
-    Programming Language :: Python :: 2.7
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
@@ -31,6 +29,3 @@ warning-is-error = 1
 
 [upload_sphinx]
 upload-dir = doc/build/html
-
-[wheel]
-universal = 1

tox.ini

@@ -1,12 +1,13 @@
 [tox]
 minversion = 2.0
-envlist = py37,py27,pep8
+envlist = py37,pep8
 skipsdist = True
 
 [testenv]
 usedevelop = True
 passenv = UPPER_CONSTRAINTS_FILE
 install_command = pip install -U {opts} {packages}
+basepython = python3
 setenv =
     VIRTUAL_ENV={envdir}
     LANG=en_US.UTF-8
@@ -23,7 +24,6 @@ commands = stestr run {posargs}
            stestr slowest
 
 [testenv:pep8]
-basepython = python3
 usedevelop = False
 skip_install = True
 deps =
@@ -37,11 +37,9 @@ commands =
     flake8 os_client_config
 
 [testenv:venv]
-basepython = python3
 commands = {posargs}
 
 [testenv:cover]
-basepython = python3
 setenv =
     {[testenv]setenv}
     PYTHON=coverage run --source os_client_config --parallel-mode
@@ -52,7 +50,6 @@ commands =
     coverage xml -o cover/coverage.xml
 
 [testenv:docs]
-basepython = python3
 skip_install = True
 deps =
     -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}
@@ -62,7 +59,6 @@ commands =
   sphinx-build -W -d doc/build/doctrees -b html doc/source/ doc/build/html
 
 [testenv:releasenotes]
-basepython = python3
 skip_install = True
 deps =
     -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}
@@ -76,7 +72,6 @@ exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build,releasenotes/source/con
 
 
 [testenv:lower-constraints]
-basepython = python3
 deps =
   -c{toxinidir}/lower-constraints.txt
   -r{toxinidir}/test-requirements.txt