Refresh python versions

Introduce support of python 3.8 and move tox and jobs to py38.

jsonschema 3.2.0 [1] support python 3.8

[1] https://github.com/Julian/jsonschema/pull/627

Change-Id: Ibcfa044dd0f3b29fd290559795ea1d98e194e886

.zuul.yaml

@@ -1,8 +1,8 @@
 - job:
-    name: openstacksdk-tox-py36-tips
+    name: openstacksdk-tox-py38-tips
-    parent: openstack-tox-py36
+    parent: openstack-tox-py38
     description: |
-      Run tox python 36 unittests against master of important libs
+      Run tox python 38 unittests against master of important libs
     vars:
       tox_install_siblings: true
       zuul_work_dir: src/opendev.org/openstack/openstacksdk
@@ -17,10 +17,10 @@
     name: openstacksdk-tox-tips
     check:
       jobs:
-        - openstacksdk-tox-py36-tips
+        - openstacksdk-tox-py38-tips
     gate:
       jobs:
-        - openstacksdk-tox-py36-tips
+        - openstacksdk-tox-py38-tips
 
 - job:
     name: openstacksdk-functional-devstack-minimum

lower-constraints.txt

@@ -10,7 +10,7 @@ iso8601==0.1.11
 jmespath==0.9.0
 jsonpatch==1.16
 jsonpointer==1.13
-jsonschema==2.6.0
+jsonschema==3.2.0
 keystoneauth1==3.18.0
 linecache2==1.0.0
 mock==3.0.0

setup.cfg

@@ -17,6 +17,7 @@ classifier =
     Programming Language :: Python :: 3.5
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
 python-requires = >=3.5
 
 [files]

test-requirements.txt

@@ -6,7 +6,7 @@ hacking>=3.0,<3.1.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 ddt>=1.0.1 # MIT
 fixtures>=3.0.0 # Apache-2.0/BSD
-jsonschema>=2.6.0 # MIT
+jsonschema>=3.2.0 # MIT
 mock>=3.0.0 # BSD
 prometheus-client>=0.4.2 # Apache-2.0
 oslo.config>=6.1.0 # Apache-2.0

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.1
-envlist = pep8,py37
+envlist = pep8,py38
 skipsdist = True
 ignore_basepython_conflict = True