Add support for python 3.8

Introduce support of python 3.8 [1] and move tox and jobs to py38.

jsonschema 3.2.0 [2] support python 3.8

[1] https://governance.openstack.org/tc/reference/runtimes/victoria.html#python-runtimes-for-victoria
[2] https://github.com/Julian/jsonschema/pull/627

Change-Id: I77dcb2e24a61e72b33b05b1bca36bc7cff6f8500

requirements.txt

@@ -10,5 +10,5 @@ netaddr>=0.7.13 # BSD
 oslo.concurrency>=3.8.0 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0
 PyYAML>=3.10.0 # MIT
-jsonschema>=2.0.0 # MIT
+jsonschema>=3.2.0 # MIT
 pyudev>=0.16.1 # LGPLv2.1+

setup.cfg

@@ -20,6 +20,7 @@ classifier =
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
 
 [files]
 packages =

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.0
-envlist = py37,pep8
+envlist = py38,pep8
 skipsdist = True
 
 [testenv]